Transition From Lichen Sclerosus to Squamous Cell Carcinoma in a Single Tissue Section

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Transition From Lichen Sclerosus to Squamous Cell Carcinoma in a Single Tissue Section

To the Editor:
Lichen sclerosus (LS) is a chronic inflammatory disorder of unknown etiology that most commonly affects the anogenital region. Progressive sclerosis results in scarring with distortion of the normal epithelial architecture.1,2 The lifetime risk for developing squamous cell carcinoma (SCC) as a complication of long-standing LS has been estimated as 4% to 6%.3,4 However, there is no general agreement concerning the exact relationship between anogenital LS and SCC.1 The coexistence of histologic findings of LS, vulvar intraepithelial neoplasia (VIN), and SCC in the same tissue is rare. We report a case of VIN and SCC developing in a region of preexisting LS.

Figure 1. Solitary, reddish,erosive nodule on the clitorissurrounded by a pearly white,smooth, glistening area.

A 76-year-old woman presented with a 7-mm nodule on the clitoris that was surrounded by a pearly white, smooth, glistening area (Figure 1). The patient reported pain and tenderness associated with the nodule. No regional lymphadenopathy was evident. We performed an excisional biopsy of the entire nodule and a small part of the whitish patch (Figure 2A). On histologic examination, the presence of hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was consistent with LS (Figure 2B). The presence of dysplastic changes with mild disturbance of the epithelial architecture as well as acanthosis and dyskeratosis in the same tissue confirmed VIN (Figure 2C). Dermal invasion and transition to SCC were seen in the part of the tissue verified as VIN. The presence of dermal tumor nests and an irregular border between the epidermis and dermis pointed to the existence of fully developed SCC (Figure 2D). To prevent the recurrence of SCC, the patient returned for follow-up periodically. There was no recurrence within 6 months after excision.

Figure 2. An excisional biopsy showed epidermal thinning on the left side and invasion of the dermis by a tumor nest on the right side (A)(H&E, original magnification ×10). Left, center, and right boxes indicate areas shown in Figures 2B, 2C and 2D, respectively. Hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was evident (B)(H&E, original magnification ×200). Dysplactic changes with mild disturbance of the epithelial architecture accompanied by acanthosis and nuclear atypia were seen (C)(H&E, original magnification ×200). Irregular masses of atypical squamous cells spread downward into the dermis representing squamous cell carcinoma of a well-differentiated type (D)(H&E, original magnification ×200).

Although LS is considered a premalignant condition, only a small portion of patients with LS ultimately develop vulvar SCC.5 There are a number of reasons for linking LS with the development of vulvar SCC. First, in the majority of cases of vulvar SCC, LS, squamous cell hyperplasia, or VIN is present in the adjacent epithelium. Lichen sclerosus is found in adjacent regions in up to 62% of vulvar SCC cases.6 Second, patients with LS may develop vulvar SCC, as frequently reported. Third, in a series of LS patients who underwent long-term follow-up, 4% to 6% were reported to have developed vulvar SCC.3,4,7

Lichen sclerosus is an inflammatory dermatosis characterized by clinicopathologic persistence and hypocellular fibrosis.2 Changes in the local environment of the keratinocyte, including chronic inflammation and sclerosis, may be responsible for the promotion of carcinogenesis.8 However, no molecular markers have been proven to identify the LS lesions that are at risk for developing into vulvar SCC.9,10 It has been suggested that VIN is the direct precursor of vulvar SCC.11,12

Histologic diagnosis of VIN is difficult. Its identification is hindered by a high degree of cellular differentiation combined with the absence of widespread architectural disorder, nuclear pleomorphism, and diffuse nuclear atypia.13 The atypia in VIN lesions is strictly confined to the basal and parabasal layers of the epithelium.11 Vulvar intraepithelial neoplasia has seldom been diagnosed as a solitary lesion because it appears to have a short intraepithelial lifetime.

Vulvar SCC can be divided into 2 patterns. The first is found in older women, which is unrelated to human papillomavirus (HPV). This type occurs in a background of LS and/or differentiated VIN. The second is predominantly found in younger women, which is related to high-risk HPV. This type of vulvar SCC frequently is associated with the histologic subtypes of warty and basaloid differentiations and is referred to as undifferentiated VIN. There is no association with LS in these cases.2,14,15

It has been suggested that LS and HPV may not be mutually exclusive but may act as cofactors in SCC pathogenesis.16 Infection with HPV is an early event in the multistep process of vulvar carcinogenesis, and HPV integration into host cell genome seems to be related to the progression of vulvar dysplasia.17 Viral integration generally disrupts the E2 region, resulting in enhanced expression of E6 and E7. E6 and E7 have the ability to bind and inactivate the protein p53 and retinoblastoma protein, which promotes rapid progression through the cell cycle without p53-mediated control of DNA integrity.18 However, the exact influence of HPV in vulvar SCC is uncertain, as divergent prevalence rates have been published.

 

 

In our case, histologic examination revealed the characteristic findings of LS, VIN, and SCC in succession. This sequence is evidence of progressive transition from LS to VIN and then to SCC. Consequently, this case suggests that vulvar LS may act as both an initiator and a promoter of carcinogenesis and that VIN may be the direct precursor of vulvar SCC. In conclusion, LS has a considerable risk for malignant transformation and requires continuous follow-up in all patients. Early histological detection of invasive lesions is crucial to reduce the risk for vulvar cancer.

References

1. Bhattacharjee P, Fatteh SM, Lloyd KL. Squamous cell carcinoma arising in long-standing lichen sclerosus et atrophicus. J Am Geriatr Soc. 2004;52:319-320.

2. Funaro D. Lichen sclerosus: a review and practical approach. Dermatol Ther. 2004;17:28-37.

3. Ulrich RH. Lichen sclerosus. In: Wolff K, Goldsmith L, Katz S, et al, eds. Fitzpatrick’s Dermatology in General Medicine. 7th ed. New York, NY: McGraw Hill; 2007:546-550.

4. Heymann WR. Lichen sclerosus. J Am Acad Dermatol. 2007;56:683-684.

5. Cooper SM, Gao XH, Powell JJ, et al. Does treatment of vulvar lichen sclerosus influence its prognosis? Arch Dermatol. 2004;140:702-706.

6. Kagie MJ, Kenter GG, Hermans J, et al. The relevance of various vulvar epithelial changes in the early detection of squamous cell carcinoma of the vulva. Int J Gynecol Cancer. 1997;7:50-57.

7. Thomas RH, Ridley CM, McGibbon DH, et al. Anogenital lichen sclerosus in women. J R Soc Med. 1996;89:694-698.

8. Walkden V, Chia Y, Wojnarowska F. The association of squamous cell carcinoma of the vulva and lichen sclerosus: implications for follow-up. J Obstet Gynaecol. 1997;17:551-553.

9. Tasker GL, Wojnarowska F. Lichen sclerosus. Clin Exp Dermatol. 2003;28:128-133.

10. Wang SH, Chi CC, Wong YW, et al. Genital verrucous carcinoma is associated with lichen sclerosus: a retrospective study and review of the literature. J Eur Acad Dermatol Venereol. 2010;24:815-819.

11. Hart WR. Vulvar intraepithelial neoplasia: historical aspects and current status. Int J Gynecol Pathol. 2001;20:16-30.

12. van de Nieuwenhof HP, Massuger LF, van der Avoort IA, et al. Vulvar squamous cell carcinoma development after diagnosis of VIN increases with age. Eur J Cancer. 2009;45:851-856.

13. Taube JM, Badger J, Kong CS, et al. Differentiated (simplex) vulvar intraepithelial neoplasia: a case report and review of the literature. Am J Dermatopathol. 2011;33:27-30.

14. Derrick EK, Ridley CM, Kobza-Black A, et al. A clinical study of 23 cases of female anogenital carcinoma. Br J Dermatol. 2000;143:1217-1223.

15. Crum C, McLachlin CM, Tate JE, et al. Pathobiology of vulvar squamous neoplasia. Gynecol Oncol Pathol. 1997;9:63-69.

16. Ansink AC, Krul MRL, De Weger RA, et al. Human papillomavirus, lichen sclerosus, and squamous cell carcinoma of the vulva: detection and prognostic significance. Gynecol Oncol. 1994;52:180-184.

17. Hillemanns P, Wang X. Integration of HPV-16 and HPV-18 DNA in vulvar intraepithelial neoplasia. Gynecol Oncol. 2006;100:276-282.

18. Stoler MH. Human papillomaviruses and cervical neoplasia: a model for carcinogenesis. Int J Gynecol Pathol. 2000;19:16-28.

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Joung Soo Kim, MD, PhD; Min Won Lee, MD; Jun Oh Paek, MD; Ho Song Kang, MD; Hee Joon Yu, MD, PhD

From the Department of Dermatology, Hanyang University, Guri Hospital, South Korea.

The authors report no conflict of interest.

Correspondence: Hee Joon Yu, MD, PhD, Department of Dermatology, Hanyang University, Guri Hospital, Guri, Gyeonggi-do 471-701, South Korea (yuhjoon@hanyang.ac.kr).

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Joung Soo Kim, MD, PhD; Min Won Lee, MD; Jun Oh Paek, MD; Ho Song Kang, MD; Hee Joon Yu, MD, PhD

From the Department of Dermatology, Hanyang University, Guri Hospital, South Korea.

The authors report no conflict of interest.

Correspondence: Hee Joon Yu, MD, PhD, Department of Dermatology, Hanyang University, Guri Hospital, Guri, Gyeonggi-do 471-701, South Korea (yuhjoon@hanyang.ac.kr).

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Joung Soo Kim, MD, PhD; Min Won Lee, MD; Jun Oh Paek, MD; Ho Song Kang, MD; Hee Joon Yu, MD, PhD

From the Department of Dermatology, Hanyang University, Guri Hospital, South Korea.

The authors report no conflict of interest.

Correspondence: Hee Joon Yu, MD, PhD, Department of Dermatology, Hanyang University, Guri Hospital, Guri, Gyeonggi-do 471-701, South Korea (yuhjoon@hanyang.ac.kr).

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To the Editor:
Lichen sclerosus (LS) is a chronic inflammatory disorder of unknown etiology that most commonly affects the anogenital region. Progressive sclerosis results in scarring with distortion of the normal epithelial architecture.1,2 The lifetime risk for developing squamous cell carcinoma (SCC) as a complication of long-standing LS has been estimated as 4% to 6%.3,4 However, there is no general agreement concerning the exact relationship between anogenital LS and SCC.1 The coexistence of histologic findings of LS, vulvar intraepithelial neoplasia (VIN), and SCC in the same tissue is rare. We report a case of VIN and SCC developing in a region of preexisting LS.

Figure 1. Solitary, reddish,erosive nodule on the clitorissurrounded by a pearly white,smooth, glistening area.

A 76-year-old woman presented with a 7-mm nodule on the clitoris that was surrounded by a pearly white, smooth, glistening area (Figure 1). The patient reported pain and tenderness associated with the nodule. No regional lymphadenopathy was evident. We performed an excisional biopsy of the entire nodule and a small part of the whitish patch (Figure 2A). On histologic examination, the presence of hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was consistent with LS (Figure 2B). The presence of dysplastic changes with mild disturbance of the epithelial architecture as well as acanthosis and dyskeratosis in the same tissue confirmed VIN (Figure 2C). Dermal invasion and transition to SCC were seen in the part of the tissue verified as VIN. The presence of dermal tumor nests and an irregular border between the epidermis and dermis pointed to the existence of fully developed SCC (Figure 2D). To prevent the recurrence of SCC, the patient returned for follow-up periodically. There was no recurrence within 6 months after excision.

Figure 2. An excisional biopsy showed epidermal thinning on the left side and invasion of the dermis by a tumor nest on the right side (A)(H&E, original magnification ×10). Left, center, and right boxes indicate areas shown in Figures 2B, 2C and 2D, respectively. Hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was evident (B)(H&E, original magnification ×200). Dysplactic changes with mild disturbance of the epithelial architecture accompanied by acanthosis and nuclear atypia were seen (C)(H&E, original magnification ×200). Irregular masses of atypical squamous cells spread downward into the dermis representing squamous cell carcinoma of a well-differentiated type (D)(H&E, original magnification ×200).

Although LS is considered a premalignant condition, only a small portion of patients with LS ultimately develop vulvar SCC.5 There are a number of reasons for linking LS with the development of vulvar SCC. First, in the majority of cases of vulvar SCC, LS, squamous cell hyperplasia, or VIN is present in the adjacent epithelium. Lichen sclerosus is found in adjacent regions in up to 62% of vulvar SCC cases.6 Second, patients with LS may develop vulvar SCC, as frequently reported. Third, in a series of LS patients who underwent long-term follow-up, 4% to 6% were reported to have developed vulvar SCC.3,4,7

Lichen sclerosus is an inflammatory dermatosis characterized by clinicopathologic persistence and hypocellular fibrosis.2 Changes in the local environment of the keratinocyte, including chronic inflammation and sclerosis, may be responsible for the promotion of carcinogenesis.8 However, no molecular markers have been proven to identify the LS lesions that are at risk for developing into vulvar SCC.9,10 It has been suggested that VIN is the direct precursor of vulvar SCC.11,12

Histologic diagnosis of VIN is difficult. Its identification is hindered by a high degree of cellular differentiation combined with the absence of widespread architectural disorder, nuclear pleomorphism, and diffuse nuclear atypia.13 The atypia in VIN lesions is strictly confined to the basal and parabasal layers of the epithelium.11 Vulvar intraepithelial neoplasia has seldom been diagnosed as a solitary lesion because it appears to have a short intraepithelial lifetime.

Vulvar SCC can be divided into 2 patterns. The first is found in older women, which is unrelated to human papillomavirus (HPV). This type occurs in a background of LS and/or differentiated VIN. The second is predominantly found in younger women, which is related to high-risk HPV. This type of vulvar SCC frequently is associated with the histologic subtypes of warty and basaloid differentiations and is referred to as undifferentiated VIN. There is no association with LS in these cases.2,14,15

It has been suggested that LS and HPV may not be mutually exclusive but may act as cofactors in SCC pathogenesis.16 Infection with HPV is an early event in the multistep process of vulvar carcinogenesis, and HPV integration into host cell genome seems to be related to the progression of vulvar dysplasia.17 Viral integration generally disrupts the E2 region, resulting in enhanced expression of E6 and E7. E6 and E7 have the ability to bind and inactivate the protein p53 and retinoblastoma protein, which promotes rapid progression through the cell cycle without p53-mediated control of DNA integrity.18 However, the exact influence of HPV in vulvar SCC is uncertain, as divergent prevalence rates have been published.

 

 

In our case, histologic examination revealed the characteristic findings of LS, VIN, and SCC in succession. This sequence is evidence of progressive transition from LS to VIN and then to SCC. Consequently, this case suggests that vulvar LS may act as both an initiator and a promoter of carcinogenesis and that VIN may be the direct precursor of vulvar SCC. In conclusion, LS has a considerable risk for malignant transformation and requires continuous follow-up in all patients. Early histological detection of invasive lesions is crucial to reduce the risk for vulvar cancer.

To the Editor:
Lichen sclerosus (LS) is a chronic inflammatory disorder of unknown etiology that most commonly affects the anogenital region. Progressive sclerosis results in scarring with distortion of the normal epithelial architecture.1,2 The lifetime risk for developing squamous cell carcinoma (SCC) as a complication of long-standing LS has been estimated as 4% to 6%.3,4 However, there is no general agreement concerning the exact relationship between anogenital LS and SCC.1 The coexistence of histologic findings of LS, vulvar intraepithelial neoplasia (VIN), and SCC in the same tissue is rare. We report a case of VIN and SCC developing in a region of preexisting LS.

Figure 1. Solitary, reddish,erosive nodule on the clitorissurrounded by a pearly white,smooth, glistening area.

A 76-year-old woman presented with a 7-mm nodule on the clitoris that was surrounded by a pearly white, smooth, glistening area (Figure 1). The patient reported pain and tenderness associated with the nodule. No regional lymphadenopathy was evident. We performed an excisional biopsy of the entire nodule and a small part of the whitish patch (Figure 2A). On histologic examination, the presence of hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was consistent with LS (Figure 2B). The presence of dysplastic changes with mild disturbance of the epithelial architecture as well as acanthosis and dyskeratosis in the same tissue confirmed VIN (Figure 2C). Dermal invasion and transition to SCC were seen in the part of the tissue verified as VIN. The presence of dermal tumor nests and an irregular border between the epidermis and dermis pointed to the existence of fully developed SCC (Figure 2D). To prevent the recurrence of SCC, the patient returned for follow-up periodically. There was no recurrence within 6 months after excision.

Figure 2. An excisional biopsy showed epidermal thinning on the left side and invasion of the dermis by a tumor nest on the right side (A)(H&E, original magnification ×10). Left, center, and right boxes indicate areas shown in Figures 2B, 2C and 2D, respectively. Hyperkeratosis, epidermal atrophy, a swollen dermal collagen bundle, and prominent edema was evident (B)(H&E, original magnification ×200). Dysplactic changes with mild disturbance of the epithelial architecture accompanied by acanthosis and nuclear atypia were seen (C)(H&E, original magnification ×200). Irregular masses of atypical squamous cells spread downward into the dermis representing squamous cell carcinoma of a well-differentiated type (D)(H&E, original magnification ×200).

Although LS is considered a premalignant condition, only a small portion of patients with LS ultimately develop vulvar SCC.5 There are a number of reasons for linking LS with the development of vulvar SCC. First, in the majority of cases of vulvar SCC, LS, squamous cell hyperplasia, or VIN is present in the adjacent epithelium. Lichen sclerosus is found in adjacent regions in up to 62% of vulvar SCC cases.6 Second, patients with LS may develop vulvar SCC, as frequently reported. Third, in a series of LS patients who underwent long-term follow-up, 4% to 6% were reported to have developed vulvar SCC.3,4,7

Lichen sclerosus is an inflammatory dermatosis characterized by clinicopathologic persistence and hypocellular fibrosis.2 Changes in the local environment of the keratinocyte, including chronic inflammation and sclerosis, may be responsible for the promotion of carcinogenesis.8 However, no molecular markers have been proven to identify the LS lesions that are at risk for developing into vulvar SCC.9,10 It has been suggested that VIN is the direct precursor of vulvar SCC.11,12

Histologic diagnosis of VIN is difficult. Its identification is hindered by a high degree of cellular differentiation combined with the absence of widespread architectural disorder, nuclear pleomorphism, and diffuse nuclear atypia.13 The atypia in VIN lesions is strictly confined to the basal and parabasal layers of the epithelium.11 Vulvar intraepithelial neoplasia has seldom been diagnosed as a solitary lesion because it appears to have a short intraepithelial lifetime.

Vulvar SCC can be divided into 2 patterns. The first is found in older women, which is unrelated to human papillomavirus (HPV). This type occurs in a background of LS and/or differentiated VIN. The second is predominantly found in younger women, which is related to high-risk HPV. This type of vulvar SCC frequently is associated with the histologic subtypes of warty and basaloid differentiations and is referred to as undifferentiated VIN. There is no association with LS in these cases.2,14,15

It has been suggested that LS and HPV may not be mutually exclusive but may act as cofactors in SCC pathogenesis.16 Infection with HPV is an early event in the multistep process of vulvar carcinogenesis, and HPV integration into host cell genome seems to be related to the progression of vulvar dysplasia.17 Viral integration generally disrupts the E2 region, resulting in enhanced expression of E6 and E7. E6 and E7 have the ability to bind and inactivate the protein p53 and retinoblastoma protein, which promotes rapid progression through the cell cycle without p53-mediated control of DNA integrity.18 However, the exact influence of HPV in vulvar SCC is uncertain, as divergent prevalence rates have been published.

 

 

In our case, histologic examination revealed the characteristic findings of LS, VIN, and SCC in succession. This sequence is evidence of progressive transition from LS to VIN and then to SCC. Consequently, this case suggests that vulvar LS may act as both an initiator and a promoter of carcinogenesis and that VIN may be the direct precursor of vulvar SCC. In conclusion, LS has a considerable risk for malignant transformation and requires continuous follow-up in all patients. Early histological detection of invasive lesions is crucial to reduce the risk for vulvar cancer.

References

1. Bhattacharjee P, Fatteh SM, Lloyd KL. Squamous cell carcinoma arising in long-standing lichen sclerosus et atrophicus. J Am Geriatr Soc. 2004;52:319-320.

2. Funaro D. Lichen sclerosus: a review and practical approach. Dermatol Ther. 2004;17:28-37.

3. Ulrich RH. Lichen sclerosus. In: Wolff K, Goldsmith L, Katz S, et al, eds. Fitzpatrick’s Dermatology in General Medicine. 7th ed. New York, NY: McGraw Hill; 2007:546-550.

4. Heymann WR. Lichen sclerosus. J Am Acad Dermatol. 2007;56:683-684.

5. Cooper SM, Gao XH, Powell JJ, et al. Does treatment of vulvar lichen sclerosus influence its prognosis? Arch Dermatol. 2004;140:702-706.

6. Kagie MJ, Kenter GG, Hermans J, et al. The relevance of various vulvar epithelial changes in the early detection of squamous cell carcinoma of the vulva. Int J Gynecol Cancer. 1997;7:50-57.

7. Thomas RH, Ridley CM, McGibbon DH, et al. Anogenital lichen sclerosus in women. J R Soc Med. 1996;89:694-698.

8. Walkden V, Chia Y, Wojnarowska F. The association of squamous cell carcinoma of the vulva and lichen sclerosus: implications for follow-up. J Obstet Gynaecol. 1997;17:551-553.

9. Tasker GL, Wojnarowska F. Lichen sclerosus. Clin Exp Dermatol. 2003;28:128-133.

10. Wang SH, Chi CC, Wong YW, et al. Genital verrucous carcinoma is associated with lichen sclerosus: a retrospective study and review of the literature. J Eur Acad Dermatol Venereol. 2010;24:815-819.

11. Hart WR. Vulvar intraepithelial neoplasia: historical aspects and current status. Int J Gynecol Pathol. 2001;20:16-30.

12. van de Nieuwenhof HP, Massuger LF, van der Avoort IA, et al. Vulvar squamous cell carcinoma development after diagnosis of VIN increases with age. Eur J Cancer. 2009;45:851-856.

13. Taube JM, Badger J, Kong CS, et al. Differentiated (simplex) vulvar intraepithelial neoplasia: a case report and review of the literature. Am J Dermatopathol. 2011;33:27-30.

14. Derrick EK, Ridley CM, Kobza-Black A, et al. A clinical study of 23 cases of female anogenital carcinoma. Br J Dermatol. 2000;143:1217-1223.

15. Crum C, McLachlin CM, Tate JE, et al. Pathobiology of vulvar squamous neoplasia. Gynecol Oncol Pathol. 1997;9:63-69.

16. Ansink AC, Krul MRL, De Weger RA, et al. Human papillomavirus, lichen sclerosus, and squamous cell carcinoma of the vulva: detection and prognostic significance. Gynecol Oncol. 1994;52:180-184.

17. Hillemanns P, Wang X. Integration of HPV-16 and HPV-18 DNA in vulvar intraepithelial neoplasia. Gynecol Oncol. 2006;100:276-282.

18. Stoler MH. Human papillomaviruses and cervical neoplasia: a model for carcinogenesis. Int J Gynecol Pathol. 2000;19:16-28.

References

1. Bhattacharjee P, Fatteh SM, Lloyd KL. Squamous cell carcinoma arising in long-standing lichen sclerosus et atrophicus. J Am Geriatr Soc. 2004;52:319-320.

2. Funaro D. Lichen sclerosus: a review and practical approach. Dermatol Ther. 2004;17:28-37.

3. Ulrich RH. Lichen sclerosus. In: Wolff K, Goldsmith L, Katz S, et al, eds. Fitzpatrick’s Dermatology in General Medicine. 7th ed. New York, NY: McGraw Hill; 2007:546-550.

4. Heymann WR. Lichen sclerosus. J Am Acad Dermatol. 2007;56:683-684.

5. Cooper SM, Gao XH, Powell JJ, et al. Does treatment of vulvar lichen sclerosus influence its prognosis? Arch Dermatol. 2004;140:702-706.

6. Kagie MJ, Kenter GG, Hermans J, et al. The relevance of various vulvar epithelial changes in the early detection of squamous cell carcinoma of the vulva. Int J Gynecol Cancer. 1997;7:50-57.

7. Thomas RH, Ridley CM, McGibbon DH, et al. Anogenital lichen sclerosus in women. J R Soc Med. 1996;89:694-698.

8. Walkden V, Chia Y, Wojnarowska F. The association of squamous cell carcinoma of the vulva and lichen sclerosus: implications for follow-up. J Obstet Gynaecol. 1997;17:551-553.

9. Tasker GL, Wojnarowska F. Lichen sclerosus. Clin Exp Dermatol. 2003;28:128-133.

10. Wang SH, Chi CC, Wong YW, et al. Genital verrucous carcinoma is associated with lichen sclerosus: a retrospective study and review of the literature. J Eur Acad Dermatol Venereol. 2010;24:815-819.

11. Hart WR. Vulvar intraepithelial neoplasia: historical aspects and current status. Int J Gynecol Pathol. 2001;20:16-30.

12. van de Nieuwenhof HP, Massuger LF, van der Avoort IA, et al. Vulvar squamous cell carcinoma development after diagnosis of VIN increases with age. Eur J Cancer. 2009;45:851-856.

13. Taube JM, Badger J, Kong CS, et al. Differentiated (simplex) vulvar intraepithelial neoplasia: a case report and review of the literature. Am J Dermatopathol. 2011;33:27-30.

14. Derrick EK, Ridley CM, Kobza-Black A, et al. A clinical study of 23 cases of female anogenital carcinoma. Br J Dermatol. 2000;143:1217-1223.

15. Crum C, McLachlin CM, Tate JE, et al. Pathobiology of vulvar squamous neoplasia. Gynecol Oncol Pathol. 1997;9:63-69.

16. Ansink AC, Krul MRL, De Weger RA, et al. Human papillomavirus, lichen sclerosus, and squamous cell carcinoma of the vulva: detection and prognostic significance. Gynecol Oncol. 1994;52:180-184.

17. Hillemanns P, Wang X. Integration of HPV-16 and HPV-18 DNA in vulvar intraepithelial neoplasia. Gynecol Oncol. 2006;100:276-282.

18. Stoler MH. Human papillomaviruses and cervical neoplasia: a model for carcinogenesis. Int J Gynecol Pathol. 2000;19:16-28.

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Transition From Lichen Sclerosus to Squamous Cell Carcinoma in a Single Tissue Section
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Transition From Lichen Sclerosus to Squamous Cell Carcinoma in a Single Tissue Section
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Lichen sclerosus; Vulvar intraepithelial neoplasia; Squamous cell carcinoma
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Lichen sclerosus; Vulvar intraepithelial neoplasia; Squamous cell carcinoma
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     Practice Points

  • Lichen sclerosus has a considerable risk for malignant transformation and requires continuous follow-up in all patients.
  • Early histological detection of invasive lesions is crucial to reduce the risk for vulvar cancer.
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LMWH doesn’t reduce late pregnancy loss in women with thrombophilias

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LMWH doesn’t reduce late pregnancy loss in women with thrombophilias

Prophylactic-dose low molecular weight heparin (LMWH), with or without aspirin, did not reduce the risk of pregnancy loss in women with inherited thrombophilia and a history of prior late or recurrent early pregnancy loss, based on a meta-analysis of randomized, controlled trials.

“To our knowledge, this is the largest study published to date that evaluates LMWH in women with inherited thrombophilia and previous pregnancy loss,” Dr. Leslie Skeith, of the University of Ottawa, and her colleagues wrote in Blood (2016 Mar 31;127[13]:1650-55). A recent Cochrane Review (2014 Jul 4;7:CD004734) similarly found no difference in live birth rates in women with or without inherited thrombophilia treated with LMWH and aspirin, compared with women given no treatment. Additionally, the Effects of Aspirin in Gestation and Reproduction [EAGeR] trial found no difference in live birth rates in women with previous pregnancy loss given aspirin or placebo (Lancet. 2014;384[9937]:29-36).

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Based on a literature search, 8 publications and 483 participants met eligibility criteria as randomized, controlled trials for the meta-analysis. Four trials included an LMWH-plus-aspirin arm, and five trials included an LMWH-only arm. The control groups included four trials with an aspirin arm, and five trials with a placebo or no-treatment arm. The data indicated no difference in the treated groups and controls (relative risk of 0.81; 95% confidence interval, 0.55-1.19; P = .28).

As there is the potential for adverse side effects and significant cost with LMWH, the researchers advise against the use of LMWH to prevent recurrent and prior late pregnancy loss (greater than 10 weeks gestation) in women with inherited thrombophilia (Grade 1B, strong recommendation with moderate-quality evidence) and suggest against LMWH to prevent recurrent pregnancy loss in women with inherited thrombophilia and prior recurrent early (less than 10 weeks) pregnancy loss. (Grade 2B, weak recommendation with moderate-quality evidence.)

Given that the analysis included just 66 women with thrombophilia and prior recurrent early pregnancy loss, the researchers could not exclude a beneficial effect of LMWH in this subgroup. An ongoing randomized controlled trial, ALIFE2 (Netherlands Trial Registration Identifier: NTR3361), “is evaluating LMWH in women with inherited thrombophilia and a history of two or more miscarriages and/or intrauterine fetal death, which we hope will provide definitive answers to this question,” the researchers wrote.

They also suggest not testing for inherited thrombophilia in women with prior late or recurrent early pregnancy loss (Grade 2B, weak recommendation with moderate-quality evidence).

The study was supported by a series of university and institutional investigator research awards. Dr. Skeith received a Thrombosis Canada CanVECTOR Research Fellowship award.

mdales@frontlinemedcom.com

On Twitter @maryjodales

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Prophylactic-dose low molecular weight heparin (LMWH), with or without aspirin, did not reduce the risk of pregnancy loss in women with inherited thrombophilia and a history of prior late or recurrent early pregnancy loss, based on a meta-analysis of randomized, controlled trials.

“To our knowledge, this is the largest study published to date that evaluates LMWH in women with inherited thrombophilia and previous pregnancy loss,” Dr. Leslie Skeith, of the University of Ottawa, and her colleagues wrote in Blood (2016 Mar 31;127[13]:1650-55). A recent Cochrane Review (2014 Jul 4;7:CD004734) similarly found no difference in live birth rates in women with or without inherited thrombophilia treated with LMWH and aspirin, compared with women given no treatment. Additionally, the Effects of Aspirin in Gestation and Reproduction [EAGeR] trial found no difference in live birth rates in women with previous pregnancy loss given aspirin or placebo (Lancet. 2014;384[9937]:29-36).

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Based on a literature search, 8 publications and 483 participants met eligibility criteria as randomized, controlled trials for the meta-analysis. Four trials included an LMWH-plus-aspirin arm, and five trials included an LMWH-only arm. The control groups included four trials with an aspirin arm, and five trials with a placebo or no-treatment arm. The data indicated no difference in the treated groups and controls (relative risk of 0.81; 95% confidence interval, 0.55-1.19; P = .28).

As there is the potential for adverse side effects and significant cost with LMWH, the researchers advise against the use of LMWH to prevent recurrent and prior late pregnancy loss (greater than 10 weeks gestation) in women with inherited thrombophilia (Grade 1B, strong recommendation with moderate-quality evidence) and suggest against LMWH to prevent recurrent pregnancy loss in women with inherited thrombophilia and prior recurrent early (less than 10 weeks) pregnancy loss. (Grade 2B, weak recommendation with moderate-quality evidence.)

Given that the analysis included just 66 women with thrombophilia and prior recurrent early pregnancy loss, the researchers could not exclude a beneficial effect of LMWH in this subgroup. An ongoing randomized controlled trial, ALIFE2 (Netherlands Trial Registration Identifier: NTR3361), “is evaluating LMWH in women with inherited thrombophilia and a history of two or more miscarriages and/or intrauterine fetal death, which we hope will provide definitive answers to this question,” the researchers wrote.

They also suggest not testing for inherited thrombophilia in women with prior late or recurrent early pregnancy loss (Grade 2B, weak recommendation with moderate-quality evidence).

The study was supported by a series of university and institutional investigator research awards. Dr. Skeith received a Thrombosis Canada CanVECTOR Research Fellowship award.

mdales@frontlinemedcom.com

On Twitter @maryjodales

Prophylactic-dose low molecular weight heparin (LMWH), with or without aspirin, did not reduce the risk of pregnancy loss in women with inherited thrombophilia and a history of prior late or recurrent early pregnancy loss, based on a meta-analysis of randomized, controlled trials.

“To our knowledge, this is the largest study published to date that evaluates LMWH in women with inherited thrombophilia and previous pregnancy loss,” Dr. Leslie Skeith, of the University of Ottawa, and her colleagues wrote in Blood (2016 Mar 31;127[13]:1650-55). A recent Cochrane Review (2014 Jul 4;7:CD004734) similarly found no difference in live birth rates in women with or without inherited thrombophilia treated with LMWH and aspirin, compared with women given no treatment. Additionally, the Effects of Aspirin in Gestation and Reproduction [EAGeR] trial found no difference in live birth rates in women with previous pregnancy loss given aspirin or placebo (Lancet. 2014;384[9937]:29-36).

©Svisio/Thinkstock

Based on a literature search, 8 publications and 483 participants met eligibility criteria as randomized, controlled trials for the meta-analysis. Four trials included an LMWH-plus-aspirin arm, and five trials included an LMWH-only arm. The control groups included four trials with an aspirin arm, and five trials with a placebo or no-treatment arm. The data indicated no difference in the treated groups and controls (relative risk of 0.81; 95% confidence interval, 0.55-1.19; P = .28).

As there is the potential for adverse side effects and significant cost with LMWH, the researchers advise against the use of LMWH to prevent recurrent and prior late pregnancy loss (greater than 10 weeks gestation) in women with inherited thrombophilia (Grade 1B, strong recommendation with moderate-quality evidence) and suggest against LMWH to prevent recurrent pregnancy loss in women with inherited thrombophilia and prior recurrent early (less than 10 weeks) pregnancy loss. (Grade 2B, weak recommendation with moderate-quality evidence.)

Given that the analysis included just 66 women with thrombophilia and prior recurrent early pregnancy loss, the researchers could not exclude a beneficial effect of LMWH in this subgroup. An ongoing randomized controlled trial, ALIFE2 (Netherlands Trial Registration Identifier: NTR3361), “is evaluating LMWH in women with inherited thrombophilia and a history of two or more miscarriages and/or intrauterine fetal death, which we hope will provide definitive answers to this question,” the researchers wrote.

They also suggest not testing for inherited thrombophilia in women with prior late or recurrent early pregnancy loss (Grade 2B, weak recommendation with moderate-quality evidence).

The study was supported by a series of university and institutional investigator research awards. Dr. Skeith received a Thrombosis Canada CanVECTOR Research Fellowship award.

mdales@frontlinemedcom.com

On Twitter @maryjodales

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Key clinical point: Given the potential for adverse side effects and significant cost, the researchers advise against the use of LMWH to prevent recurrent and prior late pregnancy loss (greater than 10 weeks gestation) in women with inherited thrombophilia.

Major finding: The data indicated no difference in the treated groups and controls (relative risk of 0.81; 95% confidence interval, 0.55-1.19; P = .28).

Data source: Based on a literature search, 8 publications and 483 participants met eligibility criteria as randomized, controlled trials for the meta-analysis.

Disclosures: The study was supported by a series of university and institutional investigator research awards. Dr. Skeith received a Thrombosis Canada CanVECTOR Research Fellowship award.

VIDEO: Myths and truths of gluten-free diets

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PHILADELPHIA – Do you have patients with undiagnosed celiac disease or legitimate gluten sensitivity, or are they self-diagnosing with the need to steer clear of gluten, only to find themselves in danger of nutritional deficiencies and other health concerns?

Of the roughly 1% of Americans who have celiac disease, only about 17% ever receive a diagnosis, leaving the remainder at risk for serious health complications, according to Dr. Peter H.R. Green, director of the Celiac Disease Center at Columbia University, New York.

Meanwhile, many people choose to go gluten free, which Dr. Green calls the most popular “fad” diet in the country. Aside from this trend being more expensive, and often inconvenient, it’s also a health risk. “It’s ironic that so many people who should be on a gluten-free diet aren’t, and those who are don’t need to be, and might even be harming their health,” he said in an interview.

In this video, Dr. Green discusses how to determine whether patients have celiac disease or another diagnosis, and how to counsel those who do have the disease and those who don’t.

The video was recorded at this year’s Digestive Diseases: New Advances, held by Global Academy for Medical Education and Rutgers, the State University of New Jersey. Global Academy and this news organization are owned by the same company.

 

 

 

 

wmcknight@frontlinemedcom.com

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PHILADELPHIA – Do you have patients with undiagnosed celiac disease or legitimate gluten sensitivity, or are they self-diagnosing with the need to steer clear of gluten, only to find themselves in danger of nutritional deficiencies and other health concerns?

Of the roughly 1% of Americans who have celiac disease, only about 17% ever receive a diagnosis, leaving the remainder at risk for serious health complications, according to Dr. Peter H.R. Green, director of the Celiac Disease Center at Columbia University, New York.

Meanwhile, many people choose to go gluten free, which Dr. Green calls the most popular “fad” diet in the country. Aside from this trend being more expensive, and often inconvenient, it’s also a health risk. “It’s ironic that so many people who should be on a gluten-free diet aren’t, and those who are don’t need to be, and might even be harming their health,” he said in an interview.

In this video, Dr. Green discusses how to determine whether patients have celiac disease or another diagnosis, and how to counsel those who do have the disease and those who don’t.

The video was recorded at this year’s Digestive Diseases: New Advances, held by Global Academy for Medical Education and Rutgers, the State University of New Jersey. Global Academy and this news organization are owned by the same company.

 

 

 

 

wmcknight@frontlinemedcom.com

On Twitter @whitneymcknight

PHILADELPHIA – Do you have patients with undiagnosed celiac disease or legitimate gluten sensitivity, or are they self-diagnosing with the need to steer clear of gluten, only to find themselves in danger of nutritional deficiencies and other health concerns?

Of the roughly 1% of Americans who have celiac disease, only about 17% ever receive a diagnosis, leaving the remainder at risk for serious health complications, according to Dr. Peter H.R. Green, director of the Celiac Disease Center at Columbia University, New York.

Meanwhile, many people choose to go gluten free, which Dr. Green calls the most popular “fad” diet in the country. Aside from this trend being more expensive, and often inconvenient, it’s also a health risk. “It’s ironic that so many people who should be on a gluten-free diet aren’t, and those who are don’t need to be, and might even be harming their health,” he said in an interview.

In this video, Dr. Green discusses how to determine whether patients have celiac disease or another diagnosis, and how to counsel those who do have the disease and those who don’t.

The video was recorded at this year’s Digestive Diseases: New Advances, held by Global Academy for Medical Education and Rutgers, the State University of New Jersey. Global Academy and this news organization are owned by the same company.

 

 

 

 

wmcknight@frontlinemedcom.com

On Twitter @whitneymcknight

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EXPERT ANALYSIS FROM DIGESTIVE DISEASES: NEW ADVANCES

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Dome-Shaped Papule With a Bloody Crust

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The Diagnosis: Congenital Folliculosebaceous Cystic Hamartoma

Folliculosebaceous cystic hamartoma (FSCH) is a rare skin condition that is either congenital or acquired. It presents as a slow-growing and flesh-colored papulonodular lesion1 that mainly occurs on the head and neck. Involvement of the nipples, perineum, back, forearms, genital areas, and subcutaneous tissue also has been reported but usually indicates a larger lesion.1,2

Histologically, FSCH is considered a hamartoma composed of both ectodermal and mesodermal elements.1 Folliculosebaceous cystic hamartoma is a more complex lesion composed of infundibulocystic structures connected to maloriented folliculosebaceous units surrounded by whorls of highly vascularized fibrous stroma and adipocytes. Clefts between fibroepithelial units and surrounding stroma usually are present.1

Epithelial components contribute to the adnexal and folliculosebaceous cystic proliferations, and mesenchymal elements include vascular tissue, adipose tissue, and fibroblast-rich stroma.1,2 Acquired lesions arising in adults have been described,1-5 but the congenital presentation of FSCH in infancy is rare.

Histopathologically, some variations of FSCH are mainly composed of epithelial components while others are composed of nonepithelial components. Nonepithelial components include neural proliferation, muscle components, vascular proliferation, and mucin deposition.1-4 In some cases, FSCH may coexist with other diseases, such as nevus lipomatosus cutaneous superficialis and neurofibromatosis type I.4,5

In our case, histopathology showed several dermal infundibulocystic structures that were lined by stratified squamous epithelium and contained horny material (Figure 1). Numerous immature sebaceous lobules and rudimentary hair follicles emanated from some of the cyst walls. Mesenchymal changes around the fibroepithelial units included fibrillary bundles of collagen, clusters of adipocytes, and an increased number of small venules (Figure 2). In addition, the stroma adjacent to the malformed perifollicle contained some amount of mucin. Prominent clefts formed between fibroepithelial units and the surrounding altered stroma.
 

 

Figure 1. Several dermal infundibulocystic structures were lined by stratified squamous epithelium and contained horny material (H&E, original magnification ×40)
  
Figure 2. Ectopic focal adipocytes deposited in the dermis and among cystic structures. There were loose myxoid substance deposits prominently in perifollicle regions (H&E, original magnification ×200).

 

  

The differential diagnosis mainly includes sebaceous trichofolliculoma, molluscum contagiosum, dermoid cysts, pilomatrixoma, Spitz nevus, and nevus lipomatosus superficialis. The differential diagnosis between FSCH and sebaceous trichofolliculoma is challenging. Both lesions show an infundibular cyst and surrounding sebaceous nodules. According to Plewig,6 trichofolliculoma has a wide spectrum ranging from low to high differentiation represented by trichofolliculoma, sebaceous trichofolliculoma, and FSCH, respectively. It is not difficult to distinguish FSCH from other diseases according to its peculiar histopathologic features.

The clinicopathologic features of our case were similar to those of reported FSCH cases, except for the following unique characteristics: congenital lesion, lack of terminal hair, and no sebaceous material extrusion. These features of hair and sebaceous material may be correlated with the patient’s age and hormonal level.1 Androgen may play a key role in sebaceous gland development at puberty, which leads to sebaceous gland hyperplasia and hypertrophy. Therefore, slight pressure from the lesions can make ivory-white sebaceous material discharge. Hence, the dermatologist and pediatrician must be poised and sensitive while making an initial diagnosis of FSCH.

References

 

1. Kimura T, Miyazawa H, Aoyagi T, et al. Folliculosebaceous cystic hamartoma: a distinctive malformation of the skin. Am J Dermatopathol. 1991;13:213-220.

2. Moriki M, Ito T, Hirakawa S, et al. Folliculosebaceous cystic hamartoma presenting as a subcutaneous nodule on the thigh. J Dermatol. 2013;40:483-484.

3. Aloi F, Tomasini C, Pippione M. Folliculosebaceous cystic hamartoma with perifollicular mucinosis. Am J Dermatopathol. 1996;18:58-62.

4. Brasanac D, Boricic I. Giant nevus lipomatosus superficialis with multiple folliculosebaceous cystic hamartomas and dermoid cysts. J Eur Acad Dermatol Venereol. 2005;19:84-86.

5. Noh S, Kwon JE, Lee KG, et al. Folliculosebaceous cystic hamartoma in a patient with neurofibromatosis type I. Ann Dermatol. 2011;23(suppl 2):S185-S187.

6. Plewig G. In discussion of: Leserbrief zu Zheng LQ, Han XC, Huang Y, Li HW. Several acneiform papules and nodules on the neck. diagnosis: folliculosebaceous cystic hamartoma. J Dtsch Dermatol Ges. 2014;12:824-825.

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Drs. Zheng and Li are from the Department of Dermatology, Chinese People’s Liberation Army General Hospital, Beijing. Dr. Zheng also is from the 251st Hospital of Chinese PLA, Zhangjiakou City, China. Dr. Han is from the Department of Pathology, First Affiliated Hospital of Hebei North University, Zhangjiakou City.

The authors report no conflict of interest.

Correspondence: Li-qiang Zheng, MD, Department of Dermatology, Chinese People’s Liberation Army General Hospital, 28 Fuxing Rd, Beijing 100853, China (zlqiang1976@163.com).

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Drs. Zheng and Li are from the Department of Dermatology, Chinese People’s Liberation Army General Hospital, Beijing. Dr. Zheng also is from the 251st Hospital of Chinese PLA, Zhangjiakou City, China. Dr. Han is from the Department of Pathology, First Affiliated Hospital of Hebei North University, Zhangjiakou City.

The authors report no conflict of interest.

Correspondence: Li-qiang Zheng, MD, Department of Dermatology, Chinese People’s Liberation Army General Hospital, 28 Fuxing Rd, Beijing 100853, China (zlqiang1976@163.com).

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Drs. Zheng and Li are from the Department of Dermatology, Chinese People’s Liberation Army General Hospital, Beijing. Dr. Zheng also is from the 251st Hospital of Chinese PLA, Zhangjiakou City, China. Dr. Han is from the Department of Pathology, First Affiliated Hospital of Hebei North University, Zhangjiakou City.

The authors report no conflict of interest.

Correspondence: Li-qiang Zheng, MD, Department of Dermatology, Chinese People’s Liberation Army General Hospital, 28 Fuxing Rd, Beijing 100853, China (zlqiang1976@163.com).

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The Diagnosis: Congenital Folliculosebaceous Cystic Hamartoma

Folliculosebaceous cystic hamartoma (FSCH) is a rare skin condition that is either congenital or acquired. It presents as a slow-growing and flesh-colored papulonodular lesion1 that mainly occurs on the head and neck. Involvement of the nipples, perineum, back, forearms, genital areas, and subcutaneous tissue also has been reported but usually indicates a larger lesion.1,2

Histologically, FSCH is considered a hamartoma composed of both ectodermal and mesodermal elements.1 Folliculosebaceous cystic hamartoma is a more complex lesion composed of infundibulocystic structures connected to maloriented folliculosebaceous units surrounded by whorls of highly vascularized fibrous stroma and adipocytes. Clefts between fibroepithelial units and surrounding stroma usually are present.1

Epithelial components contribute to the adnexal and folliculosebaceous cystic proliferations, and mesenchymal elements include vascular tissue, adipose tissue, and fibroblast-rich stroma.1,2 Acquired lesions arising in adults have been described,1-5 but the congenital presentation of FSCH in infancy is rare.

Histopathologically, some variations of FSCH are mainly composed of epithelial components while others are composed of nonepithelial components. Nonepithelial components include neural proliferation, muscle components, vascular proliferation, and mucin deposition.1-4 In some cases, FSCH may coexist with other diseases, such as nevus lipomatosus cutaneous superficialis and neurofibromatosis type I.4,5

In our case, histopathology showed several dermal infundibulocystic structures that were lined by stratified squamous epithelium and contained horny material (Figure 1). Numerous immature sebaceous lobules and rudimentary hair follicles emanated from some of the cyst walls. Mesenchymal changes around the fibroepithelial units included fibrillary bundles of collagen, clusters of adipocytes, and an increased number of small venules (Figure 2). In addition, the stroma adjacent to the malformed perifollicle contained some amount of mucin. Prominent clefts formed between fibroepithelial units and the surrounding altered stroma.
 

 

Figure 1. Several dermal infundibulocystic structures were lined by stratified squamous epithelium and contained horny material (H&E, original magnification ×40)
  
Figure 2. Ectopic focal adipocytes deposited in the dermis and among cystic structures. There were loose myxoid substance deposits prominently in perifollicle regions (H&E, original magnification ×200).

 

  

The differential diagnosis mainly includes sebaceous trichofolliculoma, molluscum contagiosum, dermoid cysts, pilomatrixoma, Spitz nevus, and nevus lipomatosus superficialis. The differential diagnosis between FSCH and sebaceous trichofolliculoma is challenging. Both lesions show an infundibular cyst and surrounding sebaceous nodules. According to Plewig,6 trichofolliculoma has a wide spectrum ranging from low to high differentiation represented by trichofolliculoma, sebaceous trichofolliculoma, and FSCH, respectively. It is not difficult to distinguish FSCH from other diseases according to its peculiar histopathologic features.

The clinicopathologic features of our case were similar to those of reported FSCH cases, except for the following unique characteristics: congenital lesion, lack of terminal hair, and no sebaceous material extrusion. These features of hair and sebaceous material may be correlated with the patient’s age and hormonal level.1 Androgen may play a key role in sebaceous gland development at puberty, which leads to sebaceous gland hyperplasia and hypertrophy. Therefore, slight pressure from the lesions can make ivory-white sebaceous material discharge. Hence, the dermatologist and pediatrician must be poised and sensitive while making an initial diagnosis of FSCH.

The Diagnosis: Congenital Folliculosebaceous Cystic Hamartoma

Folliculosebaceous cystic hamartoma (FSCH) is a rare skin condition that is either congenital or acquired. It presents as a slow-growing and flesh-colored papulonodular lesion1 that mainly occurs on the head and neck. Involvement of the nipples, perineum, back, forearms, genital areas, and subcutaneous tissue also has been reported but usually indicates a larger lesion.1,2

Histologically, FSCH is considered a hamartoma composed of both ectodermal and mesodermal elements.1 Folliculosebaceous cystic hamartoma is a more complex lesion composed of infundibulocystic structures connected to maloriented folliculosebaceous units surrounded by whorls of highly vascularized fibrous stroma and adipocytes. Clefts between fibroepithelial units and surrounding stroma usually are present.1

Epithelial components contribute to the adnexal and folliculosebaceous cystic proliferations, and mesenchymal elements include vascular tissue, adipose tissue, and fibroblast-rich stroma.1,2 Acquired lesions arising in adults have been described,1-5 but the congenital presentation of FSCH in infancy is rare.

Histopathologically, some variations of FSCH are mainly composed of epithelial components while others are composed of nonepithelial components. Nonepithelial components include neural proliferation, muscle components, vascular proliferation, and mucin deposition.1-4 In some cases, FSCH may coexist with other diseases, such as nevus lipomatosus cutaneous superficialis and neurofibromatosis type I.4,5

In our case, histopathology showed several dermal infundibulocystic structures that were lined by stratified squamous epithelium and contained horny material (Figure 1). Numerous immature sebaceous lobules and rudimentary hair follicles emanated from some of the cyst walls. Mesenchymal changes around the fibroepithelial units included fibrillary bundles of collagen, clusters of adipocytes, and an increased number of small venules (Figure 2). In addition, the stroma adjacent to the malformed perifollicle contained some amount of mucin. Prominent clefts formed between fibroepithelial units and the surrounding altered stroma.
 

 

Figure 1. Several dermal infundibulocystic structures were lined by stratified squamous epithelium and contained horny material (H&E, original magnification ×40)
  
Figure 2. Ectopic focal adipocytes deposited in the dermis and among cystic structures. There were loose myxoid substance deposits prominently in perifollicle regions (H&E, original magnification ×200).

 

  

The differential diagnosis mainly includes sebaceous trichofolliculoma, molluscum contagiosum, dermoid cysts, pilomatrixoma, Spitz nevus, and nevus lipomatosus superficialis. The differential diagnosis between FSCH and sebaceous trichofolliculoma is challenging. Both lesions show an infundibular cyst and surrounding sebaceous nodules. According to Plewig,6 trichofolliculoma has a wide spectrum ranging from low to high differentiation represented by trichofolliculoma, sebaceous trichofolliculoma, and FSCH, respectively. It is not difficult to distinguish FSCH from other diseases according to its peculiar histopathologic features.

The clinicopathologic features of our case were similar to those of reported FSCH cases, except for the following unique characteristics: congenital lesion, lack of terminal hair, and no sebaceous material extrusion. These features of hair and sebaceous material may be correlated with the patient’s age and hormonal level.1 Androgen may play a key role in sebaceous gland development at puberty, which leads to sebaceous gland hyperplasia and hypertrophy. Therefore, slight pressure from the lesions can make ivory-white sebaceous material discharge. Hence, the dermatologist and pediatrician must be poised and sensitive while making an initial diagnosis of FSCH.

References

 

1. Kimura T, Miyazawa H, Aoyagi T, et al. Folliculosebaceous cystic hamartoma: a distinctive malformation of the skin. Am J Dermatopathol. 1991;13:213-220.

2. Moriki M, Ito T, Hirakawa S, et al. Folliculosebaceous cystic hamartoma presenting as a subcutaneous nodule on the thigh. J Dermatol. 2013;40:483-484.

3. Aloi F, Tomasini C, Pippione M. Folliculosebaceous cystic hamartoma with perifollicular mucinosis. Am J Dermatopathol. 1996;18:58-62.

4. Brasanac D, Boricic I. Giant nevus lipomatosus superficialis with multiple folliculosebaceous cystic hamartomas and dermoid cysts. J Eur Acad Dermatol Venereol. 2005;19:84-86.

5. Noh S, Kwon JE, Lee KG, et al. Folliculosebaceous cystic hamartoma in a patient with neurofibromatosis type I. Ann Dermatol. 2011;23(suppl 2):S185-S187.

6. Plewig G. In discussion of: Leserbrief zu Zheng LQ, Han XC, Huang Y, Li HW. Several acneiform papules and nodules on the neck. diagnosis: folliculosebaceous cystic hamartoma. J Dtsch Dermatol Ges. 2014;12:824-825.

References

 

1. Kimura T, Miyazawa H, Aoyagi T, et al. Folliculosebaceous cystic hamartoma: a distinctive malformation of the skin. Am J Dermatopathol. 1991;13:213-220.

2. Moriki M, Ito T, Hirakawa S, et al. Folliculosebaceous cystic hamartoma presenting as a subcutaneous nodule on the thigh. J Dermatol. 2013;40:483-484.

3. Aloi F, Tomasini C, Pippione M. Folliculosebaceous cystic hamartoma with perifollicular mucinosis. Am J Dermatopathol. 1996;18:58-62.

4. Brasanac D, Boricic I. Giant nevus lipomatosus superficialis with multiple folliculosebaceous cystic hamartomas and dermoid cysts. J Eur Acad Dermatol Venereol. 2005;19:84-86.

5. Noh S, Kwon JE, Lee KG, et al. Folliculosebaceous cystic hamartoma in a patient with neurofibromatosis type I. Ann Dermatol. 2011;23(suppl 2):S185-S187.

6. Plewig G. In discussion of: Leserbrief zu Zheng LQ, Han XC, Huang Y, Li HW. Several acneiform papules and nodules on the neck. diagnosis: folliculosebaceous cystic hamartoma. J Dtsch Dermatol Ges. 2014;12:824-825.

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A 3-year-old girl was referred to our clinic for a lesion on the face that had been present since birth and had enlarged slowly with slight itching. Physical examination revealed a 1.0×1.0-cm, sessile, flesh-colored, sharply demarcated, and dome-shaped papule with a bloody crust. It was firm and slightly painful to palpation. Dilated hair follicle–like orifices and thick central terminal hair were not found. Sebaceous material was not discharged. There was no notable family history or evidence of systemic disease. The lesion was surgically removed for cosmetic reasons and further histopathologic examination was performed.

 

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Recently identified eczema comorbidities include anemia, obesity

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WAIKOLOA, HAWAII – The list of nonatopic comorbid conditions associated with atopic dermatitis is rapidly expanding.

Just in the past year, published studies have linked pediatric atopic dermatitis to increased risks of obesity, high blood pressure, headaches, anemia, and speech disorders. Meanwhile, adult atopic dermatitis was reported to be associated with increased rates of fracture and cardiovascular disease. And in the dermatologic arena, a link between atopic dermatitis, vitiligo, and alopecia areata was identified, Dr. Lawrence F. Eichenfield noted at the Hawaii Dermatology Seminar provided by the Global Academy for Medical Education/Skin Disease Education Foundation.

Dr. Lawrence F. Eichenfield

Actually, these reported associations published in 2015-2016 might best be termed “emerging comorbidities,” as they are first reports and thus need confirmation, said Dr. Eichenfield, professor of dermatology and pediatrics at the University of California, San Diego, and chief of pediatric and adolescent dermatology at Rady Children’s Hospital San Diego.

Much of this work on emerging comorbidities has been done by dermatologist Dr. Jonathan I. Silverberg of Northwestern University, Chicago, and various coinvestigators. They have been prolific.

For example, in a multivariate logistic regression analysis of 207,007 children and adolescents included in the cross-sectional 1997-2013 U.S. National Health Interview Survey, Dr. Silverberg and coinvestigators found that eczema was independently associated with a 1.83-fold increased odds of anemia. They bolstered this observation with an analysis of more than 30,000 children and adolescents in the 1992-2012 National Health and Nutrition Examination Survey (NHANES) in which they found that current eczema was associated with a 1.93-fold increased odds of anemia, particularly microcytic anemia. The underlying mechanism is unknown; however, the investigators noted that chronic inflammation and systemic immunosuppressant drugs have been shown to be associated with anemia (JAMA Pediatr. 2016;170[1]:29-34).

Dr. Silverberg also found in a multivariate logistic regression analysis of data on more than 400,000 pediatric participants in the National Survey of Children’s Health and the National Health Interview Survey that mild and severe eczema were independently associated with 1.79-fold and 2.72-fold, respectively, increased odds of headaches (J Allergy Clin Immunol. 2016 Feb;137[2]:492-9).

Using these same two data sources, with multivariate analysis adjusted for potential confounders, the investigators found that eczema was associated with a 1.81-fold increased risk of speech disorder (J Pediatr. 2016 Jan;168:185-92).

In a case-control study involving 132 children and adolescents with current moderate to severe atopic dermatitis and 143 healthy controls, Dr. Silverberg and coinvestigators found in a logistic regression analysis that atopic dermatitis was independently associated with a doubled risk of having a systolic blood pressure in the 90th percentile or higher – as well as 3.92-fold increased odds of central obesity, as defined by a waist circumference in the 85th percentile or higher (JAMA Dermatol. 2015 Feb;151[2]:144-52).

In a systematic review and meta-analysis of 16 published vitiligo studies and 17 published studies of alopecia areata, Dr. Silverberg and medical student Girish C. Mohan found that patients with vitiligo or alopecia areata were respectively 7.8 and 2.6 times more likely to have atopic dermatitis than controls without those disorders (JAMA Dermatol. 2015 May;151[5]:522-8).

In a logistic regression analysis of data on 34,500 adults with a history of eczema within the prior year who participated in the 2012 National Health Interview Survey, Drs. Nitin Garg and Dr. Silverberg concluded that the results suggested that adult atopic dermatitis is a previously unrecognized risk factor for fracture and other bone or joint injuries causing limitation. Adults with atopic dermatitis were at a 1.67-fold increased risk for such injuries in an analysis controlling for sociodemographics, other forms of atopic disease, and psychiatric and behavioral disorders (JAMA Dermatol. 2015 Jan;151[1]:33-41).

In another large cross-sectional study, Dr. Silverberg found that adults with atopic dermatitis had significantly higher odds of a history of acute MI, coronary artery disease, heart failure, and stroke (Allergy. 2015 Oct;70[10]:1300-8).

Dr. Eichenfield said that while he would like to see these hot-off-the-presses 2015-2016 findings on nonatopic comorbidities backed up by confirmatory studies in other populations, the evidence is stronger for an association between pediatric atopic dermatitis and several mental health disorders. The initial reports came mainly from Europe, but were then supported by a large study by Dr. Eric L. Simpson and coinvestigators at Oregon Health and Science University, Portland.

In their analysis of data on nearly 93,000 noninstitutionalized children and adolescents included in the 2007 National Survey of Children’s Health, the investigators found after controlling for potential confounders that atopic dermatitis was associated with a 1.87-fold increased risk of having attention-deficit/hyperactivity disorder, a 3-fold increased risk of diagnosed autism, an adjusted 1.81-fold increase in depression, and 1.87-fold increased odds of conduct disorder. The Oregon group found a clear dose-dependent relationship between the reported severity of the skin disease and the likelihood of those mental health disorders (J Allergy Clin Immunol. 2013 Feb;131[2]:428-33).

 

 

The hope is that emerging strategies to prevent atopic dermatitis or aggressively treat it early on will reduce the risk of many of these comorbid conditions, Dr. Eichenfield said.

SDEF and this news organization are owned by the same parent company.

bjancin@frontlinemedcom.com

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WAIKOLOA, HAWAII – The list of nonatopic comorbid conditions associated with atopic dermatitis is rapidly expanding.

Just in the past year, published studies have linked pediatric atopic dermatitis to increased risks of obesity, high blood pressure, headaches, anemia, and speech disorders. Meanwhile, adult atopic dermatitis was reported to be associated with increased rates of fracture and cardiovascular disease. And in the dermatologic arena, a link between atopic dermatitis, vitiligo, and alopecia areata was identified, Dr. Lawrence F. Eichenfield noted at the Hawaii Dermatology Seminar provided by the Global Academy for Medical Education/Skin Disease Education Foundation.

Dr. Lawrence F. Eichenfield

Actually, these reported associations published in 2015-2016 might best be termed “emerging comorbidities,” as they are first reports and thus need confirmation, said Dr. Eichenfield, professor of dermatology and pediatrics at the University of California, San Diego, and chief of pediatric and adolescent dermatology at Rady Children’s Hospital San Diego.

Much of this work on emerging comorbidities has been done by dermatologist Dr. Jonathan I. Silverberg of Northwestern University, Chicago, and various coinvestigators. They have been prolific.

For example, in a multivariate logistic regression analysis of 207,007 children and adolescents included in the cross-sectional 1997-2013 U.S. National Health Interview Survey, Dr. Silverberg and coinvestigators found that eczema was independently associated with a 1.83-fold increased odds of anemia. They bolstered this observation with an analysis of more than 30,000 children and adolescents in the 1992-2012 National Health and Nutrition Examination Survey (NHANES) in which they found that current eczema was associated with a 1.93-fold increased odds of anemia, particularly microcytic anemia. The underlying mechanism is unknown; however, the investigators noted that chronic inflammation and systemic immunosuppressant drugs have been shown to be associated with anemia (JAMA Pediatr. 2016;170[1]:29-34).

Dr. Silverberg also found in a multivariate logistic regression analysis of data on more than 400,000 pediatric participants in the National Survey of Children’s Health and the National Health Interview Survey that mild and severe eczema were independently associated with 1.79-fold and 2.72-fold, respectively, increased odds of headaches (J Allergy Clin Immunol. 2016 Feb;137[2]:492-9).

Using these same two data sources, with multivariate analysis adjusted for potential confounders, the investigators found that eczema was associated with a 1.81-fold increased risk of speech disorder (J Pediatr. 2016 Jan;168:185-92).

In a case-control study involving 132 children and adolescents with current moderate to severe atopic dermatitis and 143 healthy controls, Dr. Silverberg and coinvestigators found in a logistic regression analysis that atopic dermatitis was independently associated with a doubled risk of having a systolic blood pressure in the 90th percentile or higher – as well as 3.92-fold increased odds of central obesity, as defined by a waist circumference in the 85th percentile or higher (JAMA Dermatol. 2015 Feb;151[2]:144-52).

In a systematic review and meta-analysis of 16 published vitiligo studies and 17 published studies of alopecia areata, Dr. Silverberg and medical student Girish C. Mohan found that patients with vitiligo or alopecia areata were respectively 7.8 and 2.6 times more likely to have atopic dermatitis than controls without those disorders (JAMA Dermatol. 2015 May;151[5]:522-8).

In a logistic regression analysis of data on 34,500 adults with a history of eczema within the prior year who participated in the 2012 National Health Interview Survey, Drs. Nitin Garg and Dr. Silverberg concluded that the results suggested that adult atopic dermatitis is a previously unrecognized risk factor for fracture and other bone or joint injuries causing limitation. Adults with atopic dermatitis were at a 1.67-fold increased risk for such injuries in an analysis controlling for sociodemographics, other forms of atopic disease, and psychiatric and behavioral disorders (JAMA Dermatol. 2015 Jan;151[1]:33-41).

In another large cross-sectional study, Dr. Silverberg found that adults with atopic dermatitis had significantly higher odds of a history of acute MI, coronary artery disease, heart failure, and stroke (Allergy. 2015 Oct;70[10]:1300-8).

Dr. Eichenfield said that while he would like to see these hot-off-the-presses 2015-2016 findings on nonatopic comorbidities backed up by confirmatory studies in other populations, the evidence is stronger for an association between pediatric atopic dermatitis and several mental health disorders. The initial reports came mainly from Europe, but were then supported by a large study by Dr. Eric L. Simpson and coinvestigators at Oregon Health and Science University, Portland.

In their analysis of data on nearly 93,000 noninstitutionalized children and adolescents included in the 2007 National Survey of Children’s Health, the investigators found after controlling for potential confounders that atopic dermatitis was associated with a 1.87-fold increased risk of having attention-deficit/hyperactivity disorder, a 3-fold increased risk of diagnosed autism, an adjusted 1.81-fold increase in depression, and 1.87-fold increased odds of conduct disorder. The Oregon group found a clear dose-dependent relationship between the reported severity of the skin disease and the likelihood of those mental health disorders (J Allergy Clin Immunol. 2013 Feb;131[2]:428-33).

 

 

The hope is that emerging strategies to prevent atopic dermatitis or aggressively treat it early on will reduce the risk of many of these comorbid conditions, Dr. Eichenfield said.

SDEF and this news organization are owned by the same parent company.

bjancin@frontlinemedcom.com

WAIKOLOA, HAWAII – The list of nonatopic comorbid conditions associated with atopic dermatitis is rapidly expanding.

Just in the past year, published studies have linked pediatric atopic dermatitis to increased risks of obesity, high blood pressure, headaches, anemia, and speech disorders. Meanwhile, adult atopic dermatitis was reported to be associated with increased rates of fracture and cardiovascular disease. And in the dermatologic arena, a link between atopic dermatitis, vitiligo, and alopecia areata was identified, Dr. Lawrence F. Eichenfield noted at the Hawaii Dermatology Seminar provided by the Global Academy for Medical Education/Skin Disease Education Foundation.

Dr. Lawrence F. Eichenfield

Actually, these reported associations published in 2015-2016 might best be termed “emerging comorbidities,” as they are first reports and thus need confirmation, said Dr. Eichenfield, professor of dermatology and pediatrics at the University of California, San Diego, and chief of pediatric and adolescent dermatology at Rady Children’s Hospital San Diego.

Much of this work on emerging comorbidities has been done by dermatologist Dr. Jonathan I. Silverberg of Northwestern University, Chicago, and various coinvestigators. They have been prolific.

For example, in a multivariate logistic regression analysis of 207,007 children and adolescents included in the cross-sectional 1997-2013 U.S. National Health Interview Survey, Dr. Silverberg and coinvestigators found that eczema was independently associated with a 1.83-fold increased odds of anemia. They bolstered this observation with an analysis of more than 30,000 children and adolescents in the 1992-2012 National Health and Nutrition Examination Survey (NHANES) in which they found that current eczema was associated with a 1.93-fold increased odds of anemia, particularly microcytic anemia. The underlying mechanism is unknown; however, the investigators noted that chronic inflammation and systemic immunosuppressant drugs have been shown to be associated with anemia (JAMA Pediatr. 2016;170[1]:29-34).

Dr. Silverberg also found in a multivariate logistic regression analysis of data on more than 400,000 pediatric participants in the National Survey of Children’s Health and the National Health Interview Survey that mild and severe eczema were independently associated with 1.79-fold and 2.72-fold, respectively, increased odds of headaches (J Allergy Clin Immunol. 2016 Feb;137[2]:492-9).

Using these same two data sources, with multivariate analysis adjusted for potential confounders, the investigators found that eczema was associated with a 1.81-fold increased risk of speech disorder (J Pediatr. 2016 Jan;168:185-92).

In a case-control study involving 132 children and adolescents with current moderate to severe atopic dermatitis and 143 healthy controls, Dr. Silverberg and coinvestigators found in a logistic regression analysis that atopic dermatitis was independently associated with a doubled risk of having a systolic blood pressure in the 90th percentile or higher – as well as 3.92-fold increased odds of central obesity, as defined by a waist circumference in the 85th percentile or higher (JAMA Dermatol. 2015 Feb;151[2]:144-52).

In a systematic review and meta-analysis of 16 published vitiligo studies and 17 published studies of alopecia areata, Dr. Silverberg and medical student Girish C. Mohan found that patients with vitiligo or alopecia areata were respectively 7.8 and 2.6 times more likely to have atopic dermatitis than controls without those disorders (JAMA Dermatol. 2015 May;151[5]:522-8).

In a logistic regression analysis of data on 34,500 adults with a history of eczema within the prior year who participated in the 2012 National Health Interview Survey, Drs. Nitin Garg and Dr. Silverberg concluded that the results suggested that adult atopic dermatitis is a previously unrecognized risk factor for fracture and other bone or joint injuries causing limitation. Adults with atopic dermatitis were at a 1.67-fold increased risk for such injuries in an analysis controlling for sociodemographics, other forms of atopic disease, and psychiatric and behavioral disorders (JAMA Dermatol. 2015 Jan;151[1]:33-41).

In another large cross-sectional study, Dr. Silverberg found that adults with atopic dermatitis had significantly higher odds of a history of acute MI, coronary artery disease, heart failure, and stroke (Allergy. 2015 Oct;70[10]:1300-8).

Dr. Eichenfield said that while he would like to see these hot-off-the-presses 2015-2016 findings on nonatopic comorbidities backed up by confirmatory studies in other populations, the evidence is stronger for an association between pediatric atopic dermatitis and several mental health disorders. The initial reports came mainly from Europe, but were then supported by a large study by Dr. Eric L. Simpson and coinvestigators at Oregon Health and Science University, Portland.

In their analysis of data on nearly 93,000 noninstitutionalized children and adolescents included in the 2007 National Survey of Children’s Health, the investigators found after controlling for potential confounders that atopic dermatitis was associated with a 1.87-fold increased risk of having attention-deficit/hyperactivity disorder, a 3-fold increased risk of diagnosed autism, an adjusted 1.81-fold increase in depression, and 1.87-fold increased odds of conduct disorder. The Oregon group found a clear dose-dependent relationship between the reported severity of the skin disease and the likelihood of those mental health disorders (J Allergy Clin Immunol. 2013 Feb;131[2]:428-33).

 

 

The hope is that emerging strategies to prevent atopic dermatitis or aggressively treat it early on will reduce the risk of many of these comorbid conditions, Dr. Eichenfield said.

SDEF and this news organization are owned by the same parent company.

bjancin@frontlinemedcom.com

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Team produces heparin using human cells

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Researcher in the lab

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SAN DIEGO—Researchers say they have discovered a way to make the anticoagulant heparin using human cells.

The team found they could produce heparin from human embryonic kidney cells transfected with the serglycin gene.

They believe this new method could offer a safer alternative to current heparin production methods, which rely on animal byproducts that are largely sourced in China.

However, the researchers noted that their recombinant human heparin was substantially less potent than porcine heparin. So more work must be done to increase the anticoagulant activity of the human heparin.

John Whitelock, PhD, of the University of New South Wales in Sydney, Australia, and his colleagues generated the recombinant human heparin and described their work in a poster presented at Experimental Biology 2016.

“What we’ve done is looked at the way our cells naturally make heparin in our bodies, taken that gene, and expressed it in cells in the laboratory,” Dr Whitelock explained. “The result is a natural product that is not synthetic, which makes it safer than the animal-sourced material.”

Specifically, the researchers increased the expression of serglycin in human embryonic kidney (HEK-293) cells and were able to produce heparin.

The team compared the anticoagulant activity of this heparin and unfractionated porcine mucosal heparin, and they found the porcine heparin was approximately 20 times more potent than the human heparin, on a weight basis.

However, the recombinant human heparin was able to significantly delay fibrin clot formation in plasma when compared to no heparin.

“Frankly, we were surprised that there was any anticoagulant effect at all,” Dr Whitelock said. “People in this field have been working with serglycin for upwards of 20 years, and, usually, you get a sort of heparin ‘cousin’ but not real heparin. It’s been a great source of frustration, and our study is an important step toward an alternative source of heparin that could have distinct advantages for patient safety.”

The team’s next steps are to refine the engineered cells to increase the amount and potency of the heparin they produce.

Dr Whitelock estimates heparin produced with the new method could hit the market within 10 to 15 years, although he cautioned that the drug will likely be more expensive than traditional animal-derived heparin because of the economies of scale that are already built into the existing supply chain.

However, human-cell-derived heparin could potentially be safer, less prone to contamination and adverse reactions, and a better option for patients who cannot use animal-derived heparin due to religious or dietary restrictions.

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Researcher in the lab

Photo by Daniel Sone

SAN DIEGO—Researchers say they have discovered a way to make the anticoagulant heparin using human cells.

The team found they could produce heparin from human embryonic kidney cells transfected with the serglycin gene.

They believe this new method could offer a safer alternative to current heparin production methods, which rely on animal byproducts that are largely sourced in China.

However, the researchers noted that their recombinant human heparin was substantially less potent than porcine heparin. So more work must be done to increase the anticoagulant activity of the human heparin.

John Whitelock, PhD, of the University of New South Wales in Sydney, Australia, and his colleagues generated the recombinant human heparin and described their work in a poster presented at Experimental Biology 2016.

“What we’ve done is looked at the way our cells naturally make heparin in our bodies, taken that gene, and expressed it in cells in the laboratory,” Dr Whitelock explained. “The result is a natural product that is not synthetic, which makes it safer than the animal-sourced material.”

Specifically, the researchers increased the expression of serglycin in human embryonic kidney (HEK-293) cells and were able to produce heparin.

The team compared the anticoagulant activity of this heparin and unfractionated porcine mucosal heparin, and they found the porcine heparin was approximately 20 times more potent than the human heparin, on a weight basis.

However, the recombinant human heparin was able to significantly delay fibrin clot formation in plasma when compared to no heparin.

“Frankly, we were surprised that there was any anticoagulant effect at all,” Dr Whitelock said. “People in this field have been working with serglycin for upwards of 20 years, and, usually, you get a sort of heparin ‘cousin’ but not real heparin. It’s been a great source of frustration, and our study is an important step toward an alternative source of heparin that could have distinct advantages for patient safety.”

The team’s next steps are to refine the engineered cells to increase the amount and potency of the heparin they produce.

Dr Whitelock estimates heparin produced with the new method could hit the market within 10 to 15 years, although he cautioned that the drug will likely be more expensive than traditional animal-derived heparin because of the economies of scale that are already built into the existing supply chain.

However, human-cell-derived heparin could potentially be safer, less prone to contamination and adverse reactions, and a better option for patients who cannot use animal-derived heparin due to religious or dietary restrictions.

Researcher in the lab

Photo by Daniel Sone

SAN DIEGO—Researchers say they have discovered a way to make the anticoagulant heparin using human cells.

The team found they could produce heparin from human embryonic kidney cells transfected with the serglycin gene.

They believe this new method could offer a safer alternative to current heparin production methods, which rely on animal byproducts that are largely sourced in China.

However, the researchers noted that their recombinant human heparin was substantially less potent than porcine heparin. So more work must be done to increase the anticoagulant activity of the human heparin.

John Whitelock, PhD, of the University of New South Wales in Sydney, Australia, and his colleagues generated the recombinant human heparin and described their work in a poster presented at Experimental Biology 2016.

“What we’ve done is looked at the way our cells naturally make heparin in our bodies, taken that gene, and expressed it in cells in the laboratory,” Dr Whitelock explained. “The result is a natural product that is not synthetic, which makes it safer than the animal-sourced material.”

Specifically, the researchers increased the expression of serglycin in human embryonic kidney (HEK-293) cells and were able to produce heparin.

The team compared the anticoagulant activity of this heparin and unfractionated porcine mucosal heparin, and they found the porcine heparin was approximately 20 times more potent than the human heparin, on a weight basis.

However, the recombinant human heparin was able to significantly delay fibrin clot formation in plasma when compared to no heparin.

“Frankly, we were surprised that there was any anticoagulant effect at all,” Dr Whitelock said. “People in this field have been working with serglycin for upwards of 20 years, and, usually, you get a sort of heparin ‘cousin’ but not real heparin. It’s been a great source of frustration, and our study is an important step toward an alternative source of heparin that could have distinct advantages for patient safety.”

The team’s next steps are to refine the engineered cells to increase the amount and potency of the heparin they produce.

Dr Whitelock estimates heparin produced with the new method could hit the market within 10 to 15 years, although he cautioned that the drug will likely be more expensive than traditional animal-derived heparin because of the economies of scale that are already built into the existing supply chain.

However, human-cell-derived heparin could potentially be safer, less prone to contamination and adverse reactions, and a better option for patients who cannot use animal-derived heparin due to religious or dietary restrictions.

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When Should Harm-Reduction Strategies Be Used for Inpatients with Opioid Misuse?

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Case

A 33-year-old male with a history of opioid overdose and opioid use disorder is admitted with IV heroin use complicated by injection site cellulitis. He is started on antibiotics with improvement in his cellulitis; however, his hospitalization is complicated by acute opioid withdrawal. Despite his history of opioid overdose and opioid use disorder, he has never seen a substance use disorder specialist nor received any education or treatment for his addiction. He reports that he will stop using illicit drugs but declines any further addiction treatment.

What strategies can be employed to reduce his risk of future harm from opioid misuse?

Background

Over the past decade, the U.S. has experienced a rapid increase in the rates of opioid prescriptions and opioid misuse.1 Consequently, the number of ED visits and hospitalizations for opioid-related complications has also increased.2 Many complications result from the practice of injection drug use (IDU), which predisposes individuals to serious blood-borne viral infections such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV) as well as bacterial infections such as infective endocarditis. In addition, individuals who misuse opioids are at risk of death related to opioid overdose. In 2013, there were more than 24,000 deaths in the U.S. due to opioid overdose (see Figure 1).3

Figure 1. Opioid and Heroin Overdose-Related Deaths in the U.S. SOURCE: Hedergaard H, Chen LH, Warner M. National Center for Health Statistics Data Brief. Drug-poisoning deaths involving heroin: United States, 2000–2013. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.

In response to the opioid epidemic, there have been a number of local, state, and federal public health initiatives to monitor and secure the opioid drug supply, improve treatment resources, and promulgate harm-reduction interventions. At a more individual level, hospitalists have an important role to play in combating the opioid epidemic. As frontline providers, hospitalists have access to hospitalized individuals with opioid misuse who may not otherwise be exposed to the healthcare system. Therefore, inpatient hospitalizations serve as a unique and important opportunity to engage individuals in the management of their addiction.

There are a number of interventions that hospitalists and substance use disorder specialists can pursue. Psychiatric evaluation and initiation of medication-assisted treatment often aim to aid patients in abstaining from further opioid misuse. However, many individuals with opioid use disorder are not ready for treatment or experience relapses of opioid misuse despite treatment. Given this, a secondary goal is to reduce any harm that may result from opioid misuse. This is done through the implementation of harm-reduction strategies. These strategies include teaching safe injection practices, facilitating the use of syringe exchange programs, and providing opioid overdose education and naloxone distribution.

Overview of Data

Safe Injection Education. People who inject drugs are at risk for viral, bacterial, and fungal infections. These infections are often the result of nonsterile injection and may be minimized by the utilization of safe injection practices. In order to educate people who inject drugs on safe injection practices, the hospitalist must first understand the process involved in injecting drugs. In Table 1, the process of injecting heroin is outlined (of note, other illicit drugs can be injected, and processes may vary).4

As evidenced by Table 1, the process of sterile injection can be complicated, especially for an individual who may be withdrawing from opioids. Table 1 is also optimistic in that it recommends new and sterile products be used with every injection. If new and sterile equipment is not available, another option is to clean the equipment after every use, which can be done by using bleach and water. This may mitigate the risk of viral, bacterial, and fungal infections. However, the risk is still present, so users should not share or use another individual’s equipment even if it has been cleaned. Due to the risk of viral, bacterial, and fungal infections, all hospitalized individuals who inject drugs should receive education on safe injection practices.

 

 

Syringe Exchange Programs. IDU accounts for up to 15% of all new HIV infections and is the primary risk factor for the transmission of HCV.5 These infections occur when people inject using equipment contaminated with blood that contains HIV and/or HCV. Given this, if people who inject drugs could access and consistently use sterile syringes and other injection paraphernalia, the risk of transmitting blood-borne infections would be dramatically reduced. This is the concept behind syringe exchange programs (also known as needle exchange programs), which serve to increase access to sterile syringes while removing contaminated or used syringes from the community.

There is compelling evidence that syringe exchange programs decrease the rate of HIV transmission and likely reduce the rate of HCV transmission as well.6 In addition, syringe exchange programs often provide other beneficial services, such as counseling, testing, and prevention efforts for HIV, HCV, and sexually transmitted infections; distribution of condoms; and referrals to treatment services for substance use disorder.5

Unfortunately, in the U.S., restrictive state laws and lack of funding limit the number of established syringe exchange programs. According to the North American Syringe Exchange Network, there are only 226 programs in 33 states and the District of Columbia. Hospitalists and social workers should be aware of available local resources, including syringe exchange programs, and distribute this information to hospitalized individuals who inject drugs.

Opioid Overdose Education and Naloxone Distribution. Syringe exchange programs and safe injection education aim to reduce harm by decreasing the transmission of infections; however, they do not address the problem of deaths related to opioid overdose. The primary harm-reduction strategy used to address deaths related to opioid overdose in the U.S is opioid overdose education and naloxone distribution (OEND). Naloxone is an opioid antagonist that reverses the respiratory depression and decreased consciousness caused by opioids. The OEND strategy involves educating first responders— including individuals and friends and family of individuals who use opioids—to recognize the signs of an opioid overdose, seek help, provide rescue breathing, administer naloxone, and stay with the individual until emergency medical services arrive.7 This strategy has been observed to decrease rates of death related to opioid overdose.7

Given the evolving opioid epidemic and effectiveness of the OEND strategy, it is not surprising that the number of local opioid overdose prevention programs adopting OEND has risen dramatically. As of 2014, there were 140 organizations, with 644 local sites providing naloxone in 29 states and the District of Columbia. These organizations have distributed 152,000 naloxone kits and have reported more than 26,000 reversals.8 Certainly, OEND has prevented morbidity and mortality in some of these patients.

The adoption of OEND can be performed by individual prescribers as well. Naloxone is U.S. FDA-approved for the treatment of opioid overdose, and thus the liability to prescribers is similar to that of other FDA-approved drugs. However, the distribution of naloxone to third parties, such as friends and family of individuals with opioid misuse, is more complex and regulated by state laws. Many states have created liability protection for naloxone prescription to third parties. Individual state laws and additional information can be found at prescribetoprevent.org.

Hospitalists should provide opioid overdose education to all individuals with opioid misuse and friends and family of individuals with opioid misuse. In addition, hospitalists should prescribe naloxone to individuals with opioid misuse and, in states where the law allows, distribute naloxone to friends and family of individuals with opioid misuse as well.

Controversies. In general, opioid use disorder treatment providers; public health officials; and local, state, and federal government agencies have increasingly embraced harm-reduction strategies. However, some feel that harm-reduction strategies are misguided or even detrimental due to concern that they implicitly condone or enable the use of illicit substances. There have been a number of studies to evaluate the potential unintended consequences of harm-reduction strategies, and overwhelmingly, these have been either neutral or have shown the benefit of harm-reduction interventions. At this point, there is no good evidence to prevent the widespread adoption of harm-reduction strategies for hospitalists.

 

 

Back to the Case

The case involves an individual who has already had at least two complications of his IV heroin use, including cellulitis and opioid overdose. Ideally, this individual would be willing to see an addiction specialist and start medication-assisted treatment. Unfortunately, he is unwilling to be further evaluated by a specialist at this time. Regardless, he remains at risk of future complications, and it is the hospitalist’s responsibility to intervene with a goal of reducing future harm that may result from his IV heroin use.

The hospitalist in this case advises the patient to abstain from heroin and IDU, encourages him to seek treatment for his opioid use disorder, and gives him resources for linkage to care if he becomes interested. In addition, the hospitalist educates the patient on safe injection practices and provides a list of local syringe exchange programs to decrease future risk of viral, bacterial, and fungal infections. Furthermore, the hospitalist provides opioid overdose education and distributes naloxone to the patient, along with friends and family of the patient, to reduce the risk of death related to opioid overdose.

Bottom Line

Hospitalists should utilize harm-reduction interventions in individuals hospitalized with opioid misuse. TH


Dr. Theisen-Toupal is a hospitalist at the Veterans Affairs Medical Center and assistant professor of medicine at the George Washington University School of Medicine & Health Sciences, both in Washington, D.C.

References

  1. Vital signs: overdoses of prescription opioid pain relievers—United States, 1999–2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a4.htm. Published November 4, 2011.
  2. Drug abuse warning network, 2011: national estimates of drug-related emergency department visits. Substance Abuse and Mental Health Services Administration website. Available at: http://www.samhsa.gov/data/2k13/DAWN2k11ED/DAWN2k11ED.htm#5. Accessed July 29, 2015.
  3. Hedergaard H, Chen LH, Warner M. Drug-poisoning deaths involving heroin: United States, 2000–2013. National Center for Health Statistics Data Brief. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.
  4. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  5. Syringe exchange programs—United States, 2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5945a4.htm/Syringe-Exchange-Programs-United-States-2008. Published November 19, 2010.
  6. Wodak A, Conney A. Effectiveness of sterile needle and syringe programming in reducing HIV/AIDS among injecting drug users. World Health Organization website. Available at: http://apps.who.int/iris/bitstream/10665/43107/1/9241591641.pdf. Published 2004.
  7. Walley AY, Xuan Z, Hackman HH, et al. Opioid overdose rates and implementation of overdose education and nasal naloxone distribution in Massachusetts: interrupted time series analysis. BMJ. 2013;346:f174.
  8. Wheeler E, Jones TS, Gilbert MK, Davidson PJ. Opioid overdose prevention programs providing naloxone to laypersons—United States, 2014. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6423a2.htm. Published June 19, 2015.

Key Points

  • The goal of harm-reduction strategies is to mitigate the risk of harm from opioid misuse and/or IDU.
  • Syringe exchange programs and safe injection education decrease the risk of viral, bacterial, and fungal infections.
  • Opioid overdose education and naloxone distribution reduce the morbidity and mortality associated with opioid overdose.
  • Hospitalists should adopt harm-reduction interventions in hospitalized patients with opioid misuse.

Additional Reading

  1. Haber PS, Demirkol A, Lange K, Murnion B. Management of injecting drug users admitted to hospital. Lancet. 2009;374(9697):1284-1293.
  2. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  3. SAMHSA opioid overdose prevention toolkit—updated 2016. Substance Abuse and Mental Health Services Administration website. Available at: http://store.samhsa.gov/product/Opioid-Overdose-Prevention-Toolkit-Updated-2016/SMA16-4742.

Issue
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Case

A 33-year-old male with a history of opioid overdose and opioid use disorder is admitted with IV heroin use complicated by injection site cellulitis. He is started on antibiotics with improvement in his cellulitis; however, his hospitalization is complicated by acute opioid withdrawal. Despite his history of opioid overdose and opioid use disorder, he has never seen a substance use disorder specialist nor received any education or treatment for his addiction. He reports that he will stop using illicit drugs but declines any further addiction treatment.

What strategies can be employed to reduce his risk of future harm from opioid misuse?

Background

Over the past decade, the U.S. has experienced a rapid increase in the rates of opioid prescriptions and opioid misuse.1 Consequently, the number of ED visits and hospitalizations for opioid-related complications has also increased.2 Many complications result from the practice of injection drug use (IDU), which predisposes individuals to serious blood-borne viral infections such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV) as well as bacterial infections such as infective endocarditis. In addition, individuals who misuse opioids are at risk of death related to opioid overdose. In 2013, there were more than 24,000 deaths in the U.S. due to opioid overdose (see Figure 1).3

Figure 1. Opioid and Heroin Overdose-Related Deaths in the U.S. SOURCE: Hedergaard H, Chen LH, Warner M. National Center for Health Statistics Data Brief. Drug-poisoning deaths involving heroin: United States, 2000–2013. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.

In response to the opioid epidemic, there have been a number of local, state, and federal public health initiatives to monitor and secure the opioid drug supply, improve treatment resources, and promulgate harm-reduction interventions. At a more individual level, hospitalists have an important role to play in combating the opioid epidemic. As frontline providers, hospitalists have access to hospitalized individuals with opioid misuse who may not otherwise be exposed to the healthcare system. Therefore, inpatient hospitalizations serve as a unique and important opportunity to engage individuals in the management of their addiction.

There are a number of interventions that hospitalists and substance use disorder specialists can pursue. Psychiatric evaluation and initiation of medication-assisted treatment often aim to aid patients in abstaining from further opioid misuse. However, many individuals with opioid use disorder are not ready for treatment or experience relapses of opioid misuse despite treatment. Given this, a secondary goal is to reduce any harm that may result from opioid misuse. This is done through the implementation of harm-reduction strategies. These strategies include teaching safe injection practices, facilitating the use of syringe exchange programs, and providing opioid overdose education and naloxone distribution.

Overview of Data

Safe Injection Education. People who inject drugs are at risk for viral, bacterial, and fungal infections. These infections are often the result of nonsterile injection and may be minimized by the utilization of safe injection practices. In order to educate people who inject drugs on safe injection practices, the hospitalist must first understand the process involved in injecting drugs. In Table 1, the process of injecting heroin is outlined (of note, other illicit drugs can be injected, and processes may vary).4

As evidenced by Table 1, the process of sterile injection can be complicated, especially for an individual who may be withdrawing from opioids. Table 1 is also optimistic in that it recommends new and sterile products be used with every injection. If new and sterile equipment is not available, another option is to clean the equipment after every use, which can be done by using bleach and water. This may mitigate the risk of viral, bacterial, and fungal infections. However, the risk is still present, so users should not share or use another individual’s equipment even if it has been cleaned. Due to the risk of viral, bacterial, and fungal infections, all hospitalized individuals who inject drugs should receive education on safe injection practices.

 

 

Syringe Exchange Programs. IDU accounts for up to 15% of all new HIV infections and is the primary risk factor for the transmission of HCV.5 These infections occur when people inject using equipment contaminated with blood that contains HIV and/or HCV. Given this, if people who inject drugs could access and consistently use sterile syringes and other injection paraphernalia, the risk of transmitting blood-borne infections would be dramatically reduced. This is the concept behind syringe exchange programs (also known as needle exchange programs), which serve to increase access to sterile syringes while removing contaminated or used syringes from the community.

There is compelling evidence that syringe exchange programs decrease the rate of HIV transmission and likely reduce the rate of HCV transmission as well.6 In addition, syringe exchange programs often provide other beneficial services, such as counseling, testing, and prevention efforts for HIV, HCV, and sexually transmitted infections; distribution of condoms; and referrals to treatment services for substance use disorder.5

Unfortunately, in the U.S., restrictive state laws and lack of funding limit the number of established syringe exchange programs. According to the North American Syringe Exchange Network, there are only 226 programs in 33 states and the District of Columbia. Hospitalists and social workers should be aware of available local resources, including syringe exchange programs, and distribute this information to hospitalized individuals who inject drugs.

Opioid Overdose Education and Naloxone Distribution. Syringe exchange programs and safe injection education aim to reduce harm by decreasing the transmission of infections; however, they do not address the problem of deaths related to opioid overdose. The primary harm-reduction strategy used to address deaths related to opioid overdose in the U.S is opioid overdose education and naloxone distribution (OEND). Naloxone is an opioid antagonist that reverses the respiratory depression and decreased consciousness caused by opioids. The OEND strategy involves educating first responders— including individuals and friends and family of individuals who use opioids—to recognize the signs of an opioid overdose, seek help, provide rescue breathing, administer naloxone, and stay with the individual until emergency medical services arrive.7 This strategy has been observed to decrease rates of death related to opioid overdose.7

Given the evolving opioid epidemic and effectiveness of the OEND strategy, it is not surprising that the number of local opioid overdose prevention programs adopting OEND has risen dramatically. As of 2014, there were 140 organizations, with 644 local sites providing naloxone in 29 states and the District of Columbia. These organizations have distributed 152,000 naloxone kits and have reported more than 26,000 reversals.8 Certainly, OEND has prevented morbidity and mortality in some of these patients.

The adoption of OEND can be performed by individual prescribers as well. Naloxone is U.S. FDA-approved for the treatment of opioid overdose, and thus the liability to prescribers is similar to that of other FDA-approved drugs. However, the distribution of naloxone to third parties, such as friends and family of individuals with opioid misuse, is more complex and regulated by state laws. Many states have created liability protection for naloxone prescription to third parties. Individual state laws and additional information can be found at prescribetoprevent.org.

Hospitalists should provide opioid overdose education to all individuals with opioid misuse and friends and family of individuals with opioid misuse. In addition, hospitalists should prescribe naloxone to individuals with opioid misuse and, in states where the law allows, distribute naloxone to friends and family of individuals with opioid misuse as well.

Controversies. In general, opioid use disorder treatment providers; public health officials; and local, state, and federal government agencies have increasingly embraced harm-reduction strategies. However, some feel that harm-reduction strategies are misguided or even detrimental due to concern that they implicitly condone or enable the use of illicit substances. There have been a number of studies to evaluate the potential unintended consequences of harm-reduction strategies, and overwhelmingly, these have been either neutral or have shown the benefit of harm-reduction interventions. At this point, there is no good evidence to prevent the widespread adoption of harm-reduction strategies for hospitalists.

 

 

Back to the Case

The case involves an individual who has already had at least two complications of his IV heroin use, including cellulitis and opioid overdose. Ideally, this individual would be willing to see an addiction specialist and start medication-assisted treatment. Unfortunately, he is unwilling to be further evaluated by a specialist at this time. Regardless, he remains at risk of future complications, and it is the hospitalist’s responsibility to intervene with a goal of reducing future harm that may result from his IV heroin use.

The hospitalist in this case advises the patient to abstain from heroin and IDU, encourages him to seek treatment for his opioid use disorder, and gives him resources for linkage to care if he becomes interested. In addition, the hospitalist educates the patient on safe injection practices and provides a list of local syringe exchange programs to decrease future risk of viral, bacterial, and fungal infections. Furthermore, the hospitalist provides opioid overdose education and distributes naloxone to the patient, along with friends and family of the patient, to reduce the risk of death related to opioid overdose.

Bottom Line

Hospitalists should utilize harm-reduction interventions in individuals hospitalized with opioid misuse. TH


Dr. Theisen-Toupal is a hospitalist at the Veterans Affairs Medical Center and assistant professor of medicine at the George Washington University School of Medicine & Health Sciences, both in Washington, D.C.

References

  1. Vital signs: overdoses of prescription opioid pain relievers—United States, 1999–2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a4.htm. Published November 4, 2011.
  2. Drug abuse warning network, 2011: national estimates of drug-related emergency department visits. Substance Abuse and Mental Health Services Administration website. Available at: http://www.samhsa.gov/data/2k13/DAWN2k11ED/DAWN2k11ED.htm#5. Accessed July 29, 2015.
  3. Hedergaard H, Chen LH, Warner M. Drug-poisoning deaths involving heroin: United States, 2000–2013. National Center for Health Statistics Data Brief. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.
  4. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  5. Syringe exchange programs—United States, 2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5945a4.htm/Syringe-Exchange-Programs-United-States-2008. Published November 19, 2010.
  6. Wodak A, Conney A. Effectiveness of sterile needle and syringe programming in reducing HIV/AIDS among injecting drug users. World Health Organization website. Available at: http://apps.who.int/iris/bitstream/10665/43107/1/9241591641.pdf. Published 2004.
  7. Walley AY, Xuan Z, Hackman HH, et al. Opioid overdose rates and implementation of overdose education and nasal naloxone distribution in Massachusetts: interrupted time series analysis. BMJ. 2013;346:f174.
  8. Wheeler E, Jones TS, Gilbert MK, Davidson PJ. Opioid overdose prevention programs providing naloxone to laypersons—United States, 2014. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6423a2.htm. Published June 19, 2015.

Key Points

  • The goal of harm-reduction strategies is to mitigate the risk of harm from opioid misuse and/or IDU.
  • Syringe exchange programs and safe injection education decrease the risk of viral, bacterial, and fungal infections.
  • Opioid overdose education and naloxone distribution reduce the morbidity and mortality associated with opioid overdose.
  • Hospitalists should adopt harm-reduction interventions in hospitalized patients with opioid misuse.

Additional Reading

  1. Haber PS, Demirkol A, Lange K, Murnion B. Management of injecting drug users admitted to hospital. Lancet. 2009;374(9697):1284-1293.
  2. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  3. SAMHSA opioid overdose prevention toolkit—updated 2016. Substance Abuse and Mental Health Services Administration website. Available at: http://store.samhsa.gov/product/Opioid-Overdose-Prevention-Toolkit-Updated-2016/SMA16-4742.

Case

A 33-year-old male with a history of opioid overdose and opioid use disorder is admitted with IV heroin use complicated by injection site cellulitis. He is started on antibiotics with improvement in his cellulitis; however, his hospitalization is complicated by acute opioid withdrawal. Despite his history of opioid overdose and opioid use disorder, he has never seen a substance use disorder specialist nor received any education or treatment for his addiction. He reports that he will stop using illicit drugs but declines any further addiction treatment.

What strategies can be employed to reduce his risk of future harm from opioid misuse?

Background

Over the past decade, the U.S. has experienced a rapid increase in the rates of opioid prescriptions and opioid misuse.1 Consequently, the number of ED visits and hospitalizations for opioid-related complications has also increased.2 Many complications result from the practice of injection drug use (IDU), which predisposes individuals to serious blood-borne viral infections such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV) as well as bacterial infections such as infective endocarditis. In addition, individuals who misuse opioids are at risk of death related to opioid overdose. In 2013, there were more than 24,000 deaths in the U.S. due to opioid overdose (see Figure 1).3

Figure 1. Opioid and Heroin Overdose-Related Deaths in the U.S. SOURCE: Hedergaard H, Chen LH, Warner M. National Center for Health Statistics Data Brief. Drug-poisoning deaths involving heroin: United States, 2000–2013. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.

In response to the opioid epidemic, there have been a number of local, state, and federal public health initiatives to monitor and secure the opioid drug supply, improve treatment resources, and promulgate harm-reduction interventions. At a more individual level, hospitalists have an important role to play in combating the opioid epidemic. As frontline providers, hospitalists have access to hospitalized individuals with opioid misuse who may not otherwise be exposed to the healthcare system. Therefore, inpatient hospitalizations serve as a unique and important opportunity to engage individuals in the management of their addiction.

There are a number of interventions that hospitalists and substance use disorder specialists can pursue. Psychiatric evaluation and initiation of medication-assisted treatment often aim to aid patients in abstaining from further opioid misuse. However, many individuals with opioid use disorder are not ready for treatment or experience relapses of opioid misuse despite treatment. Given this, a secondary goal is to reduce any harm that may result from opioid misuse. This is done through the implementation of harm-reduction strategies. These strategies include teaching safe injection practices, facilitating the use of syringe exchange programs, and providing opioid overdose education and naloxone distribution.

Overview of Data

Safe Injection Education. People who inject drugs are at risk for viral, bacterial, and fungal infections. These infections are often the result of nonsterile injection and may be minimized by the utilization of safe injection practices. In order to educate people who inject drugs on safe injection practices, the hospitalist must first understand the process involved in injecting drugs. In Table 1, the process of injecting heroin is outlined (of note, other illicit drugs can be injected, and processes may vary).4

As evidenced by Table 1, the process of sterile injection can be complicated, especially for an individual who may be withdrawing from opioids. Table 1 is also optimistic in that it recommends new and sterile products be used with every injection. If new and sterile equipment is not available, another option is to clean the equipment after every use, which can be done by using bleach and water. This may mitigate the risk of viral, bacterial, and fungal infections. However, the risk is still present, so users should not share or use another individual’s equipment even if it has been cleaned. Due to the risk of viral, bacterial, and fungal infections, all hospitalized individuals who inject drugs should receive education on safe injection practices.

 

 

Syringe Exchange Programs. IDU accounts for up to 15% of all new HIV infections and is the primary risk factor for the transmission of HCV.5 These infections occur when people inject using equipment contaminated with blood that contains HIV and/or HCV. Given this, if people who inject drugs could access and consistently use sterile syringes and other injection paraphernalia, the risk of transmitting blood-borne infections would be dramatically reduced. This is the concept behind syringe exchange programs (also known as needle exchange programs), which serve to increase access to sterile syringes while removing contaminated or used syringes from the community.

There is compelling evidence that syringe exchange programs decrease the rate of HIV transmission and likely reduce the rate of HCV transmission as well.6 In addition, syringe exchange programs often provide other beneficial services, such as counseling, testing, and prevention efforts for HIV, HCV, and sexually transmitted infections; distribution of condoms; and referrals to treatment services for substance use disorder.5

Unfortunately, in the U.S., restrictive state laws and lack of funding limit the number of established syringe exchange programs. According to the North American Syringe Exchange Network, there are only 226 programs in 33 states and the District of Columbia. Hospitalists and social workers should be aware of available local resources, including syringe exchange programs, and distribute this information to hospitalized individuals who inject drugs.

Opioid Overdose Education and Naloxone Distribution. Syringe exchange programs and safe injection education aim to reduce harm by decreasing the transmission of infections; however, they do not address the problem of deaths related to opioid overdose. The primary harm-reduction strategy used to address deaths related to opioid overdose in the U.S is opioid overdose education and naloxone distribution (OEND). Naloxone is an opioid antagonist that reverses the respiratory depression and decreased consciousness caused by opioids. The OEND strategy involves educating first responders— including individuals and friends and family of individuals who use opioids—to recognize the signs of an opioid overdose, seek help, provide rescue breathing, administer naloxone, and stay with the individual until emergency medical services arrive.7 This strategy has been observed to decrease rates of death related to opioid overdose.7

Given the evolving opioid epidemic and effectiveness of the OEND strategy, it is not surprising that the number of local opioid overdose prevention programs adopting OEND has risen dramatically. As of 2014, there were 140 organizations, with 644 local sites providing naloxone in 29 states and the District of Columbia. These organizations have distributed 152,000 naloxone kits and have reported more than 26,000 reversals.8 Certainly, OEND has prevented morbidity and mortality in some of these patients.

The adoption of OEND can be performed by individual prescribers as well. Naloxone is U.S. FDA-approved for the treatment of opioid overdose, and thus the liability to prescribers is similar to that of other FDA-approved drugs. However, the distribution of naloxone to third parties, such as friends and family of individuals with opioid misuse, is more complex and regulated by state laws. Many states have created liability protection for naloxone prescription to third parties. Individual state laws and additional information can be found at prescribetoprevent.org.

Hospitalists should provide opioid overdose education to all individuals with opioid misuse and friends and family of individuals with opioid misuse. In addition, hospitalists should prescribe naloxone to individuals with opioid misuse and, in states where the law allows, distribute naloxone to friends and family of individuals with opioid misuse as well.

Controversies. In general, opioid use disorder treatment providers; public health officials; and local, state, and federal government agencies have increasingly embraced harm-reduction strategies. However, some feel that harm-reduction strategies are misguided or even detrimental due to concern that they implicitly condone or enable the use of illicit substances. There have been a number of studies to evaluate the potential unintended consequences of harm-reduction strategies, and overwhelmingly, these have been either neutral or have shown the benefit of harm-reduction interventions. At this point, there is no good evidence to prevent the widespread adoption of harm-reduction strategies for hospitalists.

 

 

Back to the Case

The case involves an individual who has already had at least two complications of his IV heroin use, including cellulitis and opioid overdose. Ideally, this individual would be willing to see an addiction specialist and start medication-assisted treatment. Unfortunately, he is unwilling to be further evaluated by a specialist at this time. Regardless, he remains at risk of future complications, and it is the hospitalist’s responsibility to intervene with a goal of reducing future harm that may result from his IV heroin use.

The hospitalist in this case advises the patient to abstain from heroin and IDU, encourages him to seek treatment for his opioid use disorder, and gives him resources for linkage to care if he becomes interested. In addition, the hospitalist educates the patient on safe injection practices and provides a list of local syringe exchange programs to decrease future risk of viral, bacterial, and fungal infections. Furthermore, the hospitalist provides opioid overdose education and distributes naloxone to the patient, along with friends and family of the patient, to reduce the risk of death related to opioid overdose.

Bottom Line

Hospitalists should utilize harm-reduction interventions in individuals hospitalized with opioid misuse. TH


Dr. Theisen-Toupal is a hospitalist at the Veterans Affairs Medical Center and assistant professor of medicine at the George Washington University School of Medicine & Health Sciences, both in Washington, D.C.

References

  1. Vital signs: overdoses of prescription opioid pain relievers—United States, 1999–2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6043a4.htm. Published November 4, 2011.
  2. Drug abuse warning network, 2011: national estimates of drug-related emergency department visits. Substance Abuse and Mental Health Services Administration website. Available at: http://www.samhsa.gov/data/2k13/DAWN2k11ED/DAWN2k11ED.htm#5. Accessed July 29, 2015.
  3. Hedergaard H, Chen LH, Warner M. Drug-poisoning deaths involving heroin: United States, 2000–2013. National Center for Health Statistics Data Brief. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/nchs/data/databriefs/db190.htm. Published March 2015.
  4. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  5. Syringe exchange programs—United States, 2008. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5945a4.htm/Syringe-Exchange-Programs-United-States-2008. Published November 19, 2010.
  6. Wodak A, Conney A. Effectiveness of sterile needle and syringe programming in reducing HIV/AIDS among injecting drug users. World Health Organization website. Available at: http://apps.who.int/iris/bitstream/10665/43107/1/9241591641.pdf. Published 2004.
  7. Walley AY, Xuan Z, Hackman HH, et al. Opioid overdose rates and implementation of overdose education and nasal naloxone distribution in Massachusetts: interrupted time series analysis. BMJ. 2013;346:f174.
  8. Wheeler E, Jones TS, Gilbert MK, Davidson PJ. Opioid overdose prevention programs providing naloxone to laypersons—United States, 2014. Morbidity and Mortality Weekly Report. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6423a2.htm. Published June 19, 2015.

Key Points

  • The goal of harm-reduction strategies is to mitigate the risk of harm from opioid misuse and/or IDU.
  • Syringe exchange programs and safe injection education decrease the risk of viral, bacterial, and fungal infections.
  • Opioid overdose education and naloxone distribution reduce the morbidity and mortality associated with opioid overdose.
  • Hospitalists should adopt harm-reduction interventions in hospitalized patients with opioid misuse.

Additional Reading

  1. Haber PS, Demirkol A, Lange K, Murnion B. Management of injecting drug users admitted to hospital. Lancet. 2009;374(9697):1284-1293.
  2. Getting off right: a safety manual for injection drug users. Harm Reduction Coalition website. Available at: http://harmreduction.org/wp-content/uploads/2011/12/getting-off-right.pdf.
  3. SAMHSA opioid overdose prevention toolkit—updated 2016. Substance Abuse and Mental Health Services Administration website. Available at: http://store.samhsa.gov/product/Opioid-Overdose-Prevention-Toolkit-Updated-2016/SMA16-4742.

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HM16 Q&A: What Problem Do You Hope Health IT Solves?

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With the rolling out of the Health IT track on the second full day of HM16, The Hospitalist asked: What problem do you hope health IT solves or helps you solve over the next five years?

Farhanaz Chowdhury, MD

Farhanaz Chowdhury, MD, hospitalist, HSHS St. Elizabeth’s Hospital, Belleville, Ill.

“I think that hospital health systems are very primitive. When they make that software, physicians should be more involved so that in everyday life, what we see when we are facing all those problems, you have an algorithm if you want to do something. It should pop up so that you don’t have to write it down and scroll all over.”

Michael Lintner, MD, hospitalist, Aspen Valley Hospital, Colo.

Michael Lintner, MD

“I think probably the main thing would be work flow, facilitating work flow. I think today hospitalists are just getting more and more and more work. Patient loads are getting increasingly bigger. I think with IT, [we need] systems that facilitate and help with the work flow and help the hospitalist’s day go smoother because there are so many things that we do.”

Miguel Lizardo, MD, hospitalist, University of Massachusetts Memorial Medical Center, Worcester

“It takes a lot of time to interact with the EMRs and all the technology that we have to use. If they can find a way that we can use it in a more user-friendly [way] so that it takes not a long time, that would be great. At least the EMRs that I’ve been in contact with are too cumbersome, too many clicks to get where you want, a bunch of steps to document what you need to. You really are away from the patient and spending a lot of time trying to document.”

Sandeep Palikhel, PA-C, Baylor University Medical Center, Waco, Tex.

“Definitely accuracy. In Texas, where I practice, we get a lot of transfers from rural areas because we are a Level 1 trauma hospital. We get these discharge summaries or progress notes from other hospitals that are handwritten. A lot of information gets missed whenever we’re reading it because it’s not legible, first thing, and it’s not as detail-oriented as the EHRs would be. So that definitely helps. Even going through a medication list, it helps so much to go through an EHR versus going through a handwritten medication list. That’s what I mean by accuracy.”

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With the rolling out of the Health IT track on the second full day of HM16, The Hospitalist asked: What problem do you hope health IT solves or helps you solve over the next five years?

Farhanaz Chowdhury, MD

Farhanaz Chowdhury, MD, hospitalist, HSHS St. Elizabeth’s Hospital, Belleville, Ill.

“I think that hospital health systems are very primitive. When they make that software, physicians should be more involved so that in everyday life, what we see when we are facing all those problems, you have an algorithm if you want to do something. It should pop up so that you don’t have to write it down and scroll all over.”

Michael Lintner, MD, hospitalist, Aspen Valley Hospital, Colo.

Michael Lintner, MD

“I think probably the main thing would be work flow, facilitating work flow. I think today hospitalists are just getting more and more and more work. Patient loads are getting increasingly bigger. I think with IT, [we need] systems that facilitate and help with the work flow and help the hospitalist’s day go smoother because there are so many things that we do.”

Miguel Lizardo, MD, hospitalist, University of Massachusetts Memorial Medical Center, Worcester

“It takes a lot of time to interact with the EMRs and all the technology that we have to use. If they can find a way that we can use it in a more user-friendly [way] so that it takes not a long time, that would be great. At least the EMRs that I’ve been in contact with are too cumbersome, too many clicks to get where you want, a bunch of steps to document what you need to. You really are away from the patient and spending a lot of time trying to document.”

Sandeep Palikhel, PA-C, Baylor University Medical Center, Waco, Tex.

“Definitely accuracy. In Texas, where I practice, we get a lot of transfers from rural areas because we are a Level 1 trauma hospital. We get these discharge summaries or progress notes from other hospitals that are handwritten. A lot of information gets missed whenever we’re reading it because it’s not legible, first thing, and it’s not as detail-oriented as the EHRs would be. So that definitely helps. Even going through a medication list, it helps so much to go through an EHR versus going through a handwritten medication list. That’s what I mean by accuracy.”

With the rolling out of the Health IT track on the second full day of HM16, The Hospitalist asked: What problem do you hope health IT solves or helps you solve over the next five years?

Farhanaz Chowdhury, MD

Farhanaz Chowdhury, MD, hospitalist, HSHS St. Elizabeth’s Hospital, Belleville, Ill.

“I think that hospital health systems are very primitive. When they make that software, physicians should be more involved so that in everyday life, what we see when we are facing all those problems, you have an algorithm if you want to do something. It should pop up so that you don’t have to write it down and scroll all over.”

Michael Lintner, MD, hospitalist, Aspen Valley Hospital, Colo.

Michael Lintner, MD

“I think probably the main thing would be work flow, facilitating work flow. I think today hospitalists are just getting more and more and more work. Patient loads are getting increasingly bigger. I think with IT, [we need] systems that facilitate and help with the work flow and help the hospitalist’s day go smoother because there are so many things that we do.”

Miguel Lizardo, MD, hospitalist, University of Massachusetts Memorial Medical Center, Worcester

“It takes a lot of time to interact with the EMRs and all the technology that we have to use. If they can find a way that we can use it in a more user-friendly [way] so that it takes not a long time, that would be great. At least the EMRs that I’ve been in contact with are too cumbersome, too many clicks to get where you want, a bunch of steps to document what you need to. You really are away from the patient and spending a lot of time trying to document.”

Sandeep Palikhel, PA-C, Baylor University Medical Center, Waco, Tex.

“Definitely accuracy. In Texas, where I practice, we get a lot of transfers from rural areas because we are a Level 1 trauma hospital. We get these discharge summaries or progress notes from other hospitals that are handwritten. A lot of information gets missed whenever we’re reading it because it’s not legible, first thing, and it’s not as detail-oriented as the EHRs would be. So that definitely helps. Even going through a medication list, it helps so much to go through an EHR versus going through a handwritten medication list. That’s what I mean by accuracy.”

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New Findings Show: Factors Contributing to the Prevalence in readmission for Bariatric Surgery Patients

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NEW YORK (Reuters Health) - About one in 20 bariatric surgery patients are readmitted to the hospital within 30 days of having the procedure, according to new findings.

Readmissions are increasingly being used as a quality metric for surgical procedures, Dr. John Morton of Stanford University in California and colleagues note in their report, published online March 19 in the American Journal of Surgery.

"While (the Centers for Medicare and Medicaid Services) has not addressed bariatric surgery readmissions to date, other payors have made readmissions a priority," they add. "Data regarding bariatric surgery readmissions are critical to help better understand and drive quality improvement in this area.

"To investigate the prevalence, causes and risk factors for readmission following bariatric surgery, the researchers looked at data from the 2012 American College of Surgeons National Surgical Quality Improvement Program Public Use File dataset on nearly 18,300 bariatric patients, of whom 55% had laparoscopic Roux-en-Y gastric bypass (LRYGB), 10% had laparoscopic adjustable gastric banding (LAGB), and 35% had laparoscopic sleeve gastrectomy (LSG).

There were 955 readmissions (5.22%), most commonly for gastrointestinal causes (45%), dietary reasons (34%) and bleeding (7%). Readmission rates were nearly 7% for LRYGB; just under 2% for LAGB; and 4% for LSG.

The patients who were readmitted had a significantly longer average operating time (132 vs. 115 minutes) and length of stay (2.76 days vs. 2.23). Forty percent had a complication, versus 4% of patients who were not readmitted. Patients who were readmitted were also more likely to have a body mass index above 50, preoperative diabetes, chronic obstructive pulmonary disease, and hypertension.

Factors independently associated with readmission included African-American race (odds ratio, 1.53), complication (OR, 11.3) and resident involvement (OR, 0.53).

"Other studies have also demonstrated similar predictors of readmission and have also demonstrated that length of stay may also play a role in readmission rates," Dr. Morton and his team state. "This study helps demonstrate that bariatric surgery readmissions are prevalent and potentially preventable."

 

 

 

 

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NEW YORK (Reuters Health) - About one in 20 bariatric surgery patients are readmitted to the hospital within 30 days of having the procedure, according to new findings.

Readmissions are increasingly being used as a quality metric for surgical procedures, Dr. John Morton of Stanford University in California and colleagues note in their report, published online March 19 in the American Journal of Surgery.

"While (the Centers for Medicare and Medicaid Services) has not addressed bariatric surgery readmissions to date, other payors have made readmissions a priority," they add. "Data regarding bariatric surgery readmissions are critical to help better understand and drive quality improvement in this area.

"To investigate the prevalence, causes and risk factors for readmission following bariatric surgery, the researchers looked at data from the 2012 American College of Surgeons National Surgical Quality Improvement Program Public Use File dataset on nearly 18,300 bariatric patients, of whom 55% had laparoscopic Roux-en-Y gastric bypass (LRYGB), 10% had laparoscopic adjustable gastric banding (LAGB), and 35% had laparoscopic sleeve gastrectomy (LSG).

There were 955 readmissions (5.22%), most commonly for gastrointestinal causes (45%), dietary reasons (34%) and bleeding (7%). Readmission rates were nearly 7% for LRYGB; just under 2% for LAGB; and 4% for LSG.

The patients who were readmitted had a significantly longer average operating time (132 vs. 115 minutes) and length of stay (2.76 days vs. 2.23). Forty percent had a complication, versus 4% of patients who were not readmitted. Patients who were readmitted were also more likely to have a body mass index above 50, preoperative diabetes, chronic obstructive pulmonary disease, and hypertension.

Factors independently associated with readmission included African-American race (odds ratio, 1.53), complication (OR, 11.3) and resident involvement (OR, 0.53).

"Other studies have also demonstrated similar predictors of readmission and have also demonstrated that length of stay may also play a role in readmission rates," Dr. Morton and his team state. "This study helps demonstrate that bariatric surgery readmissions are prevalent and potentially preventable."

 

 

 

 

NEW YORK (Reuters Health) - About one in 20 bariatric surgery patients are readmitted to the hospital within 30 days of having the procedure, according to new findings.

Readmissions are increasingly being used as a quality metric for surgical procedures, Dr. John Morton of Stanford University in California and colleagues note in their report, published online March 19 in the American Journal of Surgery.

"While (the Centers for Medicare and Medicaid Services) has not addressed bariatric surgery readmissions to date, other payors have made readmissions a priority," they add. "Data regarding bariatric surgery readmissions are critical to help better understand and drive quality improvement in this area.

"To investigate the prevalence, causes and risk factors for readmission following bariatric surgery, the researchers looked at data from the 2012 American College of Surgeons National Surgical Quality Improvement Program Public Use File dataset on nearly 18,300 bariatric patients, of whom 55% had laparoscopic Roux-en-Y gastric bypass (LRYGB), 10% had laparoscopic adjustable gastric banding (LAGB), and 35% had laparoscopic sleeve gastrectomy (LSG).

There were 955 readmissions (5.22%), most commonly for gastrointestinal causes (45%), dietary reasons (34%) and bleeding (7%). Readmission rates were nearly 7% for LRYGB; just under 2% for LAGB; and 4% for LSG.

The patients who were readmitted had a significantly longer average operating time (132 vs. 115 minutes) and length of stay (2.76 days vs. 2.23). Forty percent had a complication, versus 4% of patients who were not readmitted. Patients who were readmitted were also more likely to have a body mass index above 50, preoperative diabetes, chronic obstructive pulmonary disease, and hypertension.

Factors independently associated with readmission included African-American race (odds ratio, 1.53), complication (OR, 11.3) and resident involvement (OR, 0.53).

"Other studies have also demonstrated similar predictors of readmission and have also demonstrated that length of stay may also play a role in readmission rates," Dr. Morton and his team state. "This study helps demonstrate that bariatric surgery readmissions are prevalent and potentially preventable."

 

 

 

 

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EMA recommends orphan designation for cancer vaccine

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EMA recommends orphan designation for cancer vaccine

Micrograph showing AML

The European Medicines Agency (EMA) has recommended orphan designation for the WT1 cancer vaccine galinpepimut-S as a treatment for patients

with acute myeloid leukemia (AML) and patients with malignant pleural mesothelioma (MPM).

The EMA’s opinion has been forwarded to the European Commission (EC), which makes the final decision.

The EC grants orphan designation to products intended to treat, prevent, or diagnose a life-threatening condition affecting up to 5 in 10,000 people in the European Union. The product must provide significant benefit to those affected by the condition.

Orphan designation from the EC provides companies with certain development incentives, including protocol assistance, a type of scientific advice specific for orphan drugs, and 10 years of market exclusivity once the drug is approved for use.

About the vaccine

The WT1 vaccine consists of 4 modified peptide chains that induce an innate immune response (CD4+/CD8+ T cells) against the WT1 antigen. The vaccine is administered in combination with an adjuvant and an immune modulator to improve the immune response to the target.

Based on the vaccine’s mechanism and the accumulating evidence of activity in mid-stage trials, researchers believe the WT1 vaccine may have the potential to complement currently available therapies by destroying residual tumor cells of cancers in remission and providing ongoing immune surveillance for recurrent tumors.

The WT1 vaccine could potentially target more than 20 cancers that overexpress WT1, many of which are associated with relapse rates of up to 80% or more, as seen in patients with AML and MPM.

The vaccine is being developed by SELLAS Life Sciences Group. The company said that, in a phase 1 study, AML patients treated with the vaccine had a median overall survival of more than 3 years.

In a phase 2 trial of the vaccine, adult AML patients had a median overall survival of around 4 years. Data from the phase 2 trial are scheduled to be presented at the 2016 ASCO Annual Meeting.

SELLAS said it expects to begin a phase 3 trial of the vaccine in AML patients later this year.

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Micrograph showing AML

The European Medicines Agency (EMA) has recommended orphan designation for the WT1 cancer vaccine galinpepimut-S as a treatment for patients

with acute myeloid leukemia (AML) and patients with malignant pleural mesothelioma (MPM).

The EMA’s opinion has been forwarded to the European Commission (EC), which makes the final decision.

The EC grants orphan designation to products intended to treat, prevent, or diagnose a life-threatening condition affecting up to 5 in 10,000 people in the European Union. The product must provide significant benefit to those affected by the condition.

Orphan designation from the EC provides companies with certain development incentives, including protocol assistance, a type of scientific advice specific for orphan drugs, and 10 years of market exclusivity once the drug is approved for use.

About the vaccine

The WT1 vaccine consists of 4 modified peptide chains that induce an innate immune response (CD4+/CD8+ T cells) against the WT1 antigen. The vaccine is administered in combination with an adjuvant and an immune modulator to improve the immune response to the target.

Based on the vaccine’s mechanism and the accumulating evidence of activity in mid-stage trials, researchers believe the WT1 vaccine may have the potential to complement currently available therapies by destroying residual tumor cells of cancers in remission and providing ongoing immune surveillance for recurrent tumors.

The WT1 vaccine could potentially target more than 20 cancers that overexpress WT1, many of which are associated with relapse rates of up to 80% or more, as seen in patients with AML and MPM.

The vaccine is being developed by SELLAS Life Sciences Group. The company said that, in a phase 1 study, AML patients treated with the vaccine had a median overall survival of more than 3 years.

In a phase 2 trial of the vaccine, adult AML patients had a median overall survival of around 4 years. Data from the phase 2 trial are scheduled to be presented at the 2016 ASCO Annual Meeting.

SELLAS said it expects to begin a phase 3 trial of the vaccine in AML patients later this year.

Micrograph showing AML

The European Medicines Agency (EMA) has recommended orphan designation for the WT1 cancer vaccine galinpepimut-S as a treatment for patients

with acute myeloid leukemia (AML) and patients with malignant pleural mesothelioma (MPM).

The EMA’s opinion has been forwarded to the European Commission (EC), which makes the final decision.

The EC grants orphan designation to products intended to treat, prevent, or diagnose a life-threatening condition affecting up to 5 in 10,000 people in the European Union. The product must provide significant benefit to those affected by the condition.

Orphan designation from the EC provides companies with certain development incentives, including protocol assistance, a type of scientific advice specific for orphan drugs, and 10 years of market exclusivity once the drug is approved for use.

About the vaccine

The WT1 vaccine consists of 4 modified peptide chains that induce an innate immune response (CD4+/CD8+ T cells) against the WT1 antigen. The vaccine is administered in combination with an adjuvant and an immune modulator to improve the immune response to the target.

Based on the vaccine’s mechanism and the accumulating evidence of activity in mid-stage trials, researchers believe the WT1 vaccine may have the potential to complement currently available therapies by destroying residual tumor cells of cancers in remission and providing ongoing immune surveillance for recurrent tumors.

The WT1 vaccine could potentially target more than 20 cancers that overexpress WT1, many of which are associated with relapse rates of up to 80% or more, as seen in patients with AML and MPM.

The vaccine is being developed by SELLAS Life Sciences Group. The company said that, in a phase 1 study, AML patients treated with the vaccine had a median overall survival of more than 3 years.

In a phase 2 trial of the vaccine, adult AML patients had a median overall survival of around 4 years. Data from the phase 2 trial are scheduled to be presented at the 2016 ASCO Annual Meeting.

SELLAS said it expects to begin a phase 3 trial of the vaccine in AML patients later this year.

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EMA recommends orphan designation for cancer vaccine
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