Chronic itch on the upper back, with pain

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Chronic itch on the upper back, with pain

A 47-year-old man had had a chronic itch on his back for 2 years. He had no history of trauma to the site, nor did he recall applying topical products to that area.

He was otherwise healthy. He worked as an electrician and said he occasionally experienced cervical and back pain while working.

An examination revealed two grayish-brown ovoid patches on the upper back, each 5 cm to 7 cm in diameter (Figure 1).

DIAGNOSIS: NOTALGIA PARESTHETICA

Figure 1. Two gray-brown ovoid patches on the back and on the right infrascapular region were associated with chronic itch.

Chronic, brown-gray, itching patches on the back in an adult patient are characteristic of notalgia paresthetica.

Conditions that may be included in the differential diagnosis but that do not match the presentation in this patient include the following:

  • Cutaneous sarcoidosis, which may exhibit several morphologies, but itching would be unusual
  • Chronic discoid lupus erythematosus, characterized by scarring and atrophic plaques, but mainly on the face and scalp
  • Contact dermatitis, an itchy eczematous condition, characterized by scaly erythematous plaques
  • Lichen amyloidosis, a variant of cutaneous amyloidosis characterized by the deposition of amyloid or amyloid-like proteins in the dermis, resulting in red-brown hyperkeratotic lichenoid papules, usually on the pretibial surfaces.

CAUSES AND MANAGEMENT

Notalgia paresthetica is a neuropathic syndrome of the skin of the middle of the back characterized by localized pruritus.1–3 Although common, it often goes undiagnosed.1,3,4 It tends to be chronic, with periodic remissions and exacerbations.

Notalgia paresthetica is thought to be a sensory neuropathy and may result from compression of the posterior rami of spinal nerve segments T2 to T6. Slight degenerative changes are often but not always observed, and their clinical significance is uncertain.1,2,4 The condition affects people of all races and both sexes, usually adults ages 40 to 80.

Clinically, it presents as localized pruritus on the back, usually within the dermatomes T2 to T6.5 Examination reveals a hyperpigmented patch, sometimes with excoriations.5

Diagnosis is based on clinical findings. Laboratory tests are not useful. Imaging is not needed, but magnetic resonance imaging and evaluation by an orthopedic surgeon are appropriate when there is chronic focal pain. Skin biopsy is usually not necessary, although it may be useful in some patients to exclude other conditions. When biopsy is done, macular amyloidosis or postinflammatory hyperpigmentation is seen.

Treatment is difficult. Topical steroids and oral antihistamines are usually ineffective,5 but topical capsaicin may provide temporary relief.3 The most recommended treatment in patients with notalgia paresthetica and underlying spinal disease is evaluation and conservative management of the spinal disease, including progressive exercise and rehabilitation.2 Other therapies include oxcarbazepine, gabapentin, transcutaneous electrical nerve stimulation, phototherapy,6 and botulinum toxin injection.

TREATMENT OF OUR PATIENT

In our patient, an orthopedic evaluation revealed cervicothoracic scoliosis. He underwent 6 months of conservative treatment under the care of his family physician and a dermatologist. Treatment consisted of exercise and rehabilitation for his scoliosis, and daily application of topical mometasone. The pain and itch gradual improved.

References
  1. Pérez-Pérez LC. General features and treatment of notalgia paresthetica. Skinmed 2011; 9:353358.
  2. Fleischer AB, Meade TJ, Fleischer AB. Notalgia paresthetica: successful treatment with exercises. Acta Derm Venereol 2011; 91:356357.
  3. Wallengren J, Klinker M. Successful treatment of notalgia paresthetica with topical capsaicin: vehicle-controlled, double-blind, crossover study. J Am Acad Dermatol 1995; 32:287289.
  4. Savk O, Savk E. Investigation of spinal pathology in notalgia paresthetica. J Am Acad Dermatol 2005; 52:10851087.
  5. Raison-Peyron N, Meunier L, Acevedo M, Meynadier J. Notalgia paresthetica: clinical, physiopathological and therapeutic aspects. A study of 12 cases. J Eur Acad Dermatol Venereol 1999; 12:215221.
  6. Pérez-Pérez L, Allegue F, Fabeiro JM, Caeiro JL, Zulaica A. Notalgia paresthesica successfully treated with narrow-band UVB: report of five cases. J Eur Acad Dermatol Venereol 2010; 24:730732.
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Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Emiliano Grillo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Mayte Truchuelo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Address: Sergio Vañó-Galván, PhD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; e-mail: sergiovano@yahoo.es

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Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Emiliano Grillo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Mayte Truchuelo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Address: Sergio Vañó-Galván, PhD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; e-mail: sergiovano@yahoo.es

Author and Disclosure Information

Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Emiliano Grillo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Mayte Truchuelo, MD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Address: Sergio Vañó-Galván, PhD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; e-mail: sergiovano@yahoo.es

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A 47-year-old man had had a chronic itch on his back for 2 years. He had no history of trauma to the site, nor did he recall applying topical products to that area.

He was otherwise healthy. He worked as an electrician and said he occasionally experienced cervical and back pain while working.

An examination revealed two grayish-brown ovoid patches on the upper back, each 5 cm to 7 cm in diameter (Figure 1).

DIAGNOSIS: NOTALGIA PARESTHETICA

Figure 1. Two gray-brown ovoid patches on the back and on the right infrascapular region were associated with chronic itch.

Chronic, brown-gray, itching patches on the back in an adult patient are characteristic of notalgia paresthetica.

Conditions that may be included in the differential diagnosis but that do not match the presentation in this patient include the following:

  • Cutaneous sarcoidosis, which may exhibit several morphologies, but itching would be unusual
  • Chronic discoid lupus erythematosus, characterized by scarring and atrophic plaques, but mainly on the face and scalp
  • Contact dermatitis, an itchy eczematous condition, characterized by scaly erythematous plaques
  • Lichen amyloidosis, a variant of cutaneous amyloidosis characterized by the deposition of amyloid or amyloid-like proteins in the dermis, resulting in red-brown hyperkeratotic lichenoid papules, usually on the pretibial surfaces.

CAUSES AND MANAGEMENT

Notalgia paresthetica is a neuropathic syndrome of the skin of the middle of the back characterized by localized pruritus.1–3 Although common, it often goes undiagnosed.1,3,4 It tends to be chronic, with periodic remissions and exacerbations.

Notalgia paresthetica is thought to be a sensory neuropathy and may result from compression of the posterior rami of spinal nerve segments T2 to T6. Slight degenerative changes are often but not always observed, and their clinical significance is uncertain.1,2,4 The condition affects people of all races and both sexes, usually adults ages 40 to 80.

Clinically, it presents as localized pruritus on the back, usually within the dermatomes T2 to T6.5 Examination reveals a hyperpigmented patch, sometimes with excoriations.5

Diagnosis is based on clinical findings. Laboratory tests are not useful. Imaging is not needed, but magnetic resonance imaging and evaluation by an orthopedic surgeon are appropriate when there is chronic focal pain. Skin biopsy is usually not necessary, although it may be useful in some patients to exclude other conditions. When biopsy is done, macular amyloidosis or postinflammatory hyperpigmentation is seen.

Treatment is difficult. Topical steroids and oral antihistamines are usually ineffective,5 but topical capsaicin may provide temporary relief.3 The most recommended treatment in patients with notalgia paresthetica and underlying spinal disease is evaluation and conservative management of the spinal disease, including progressive exercise and rehabilitation.2 Other therapies include oxcarbazepine, gabapentin, transcutaneous electrical nerve stimulation, phototherapy,6 and botulinum toxin injection.

TREATMENT OF OUR PATIENT

In our patient, an orthopedic evaluation revealed cervicothoracic scoliosis. He underwent 6 months of conservative treatment under the care of his family physician and a dermatologist. Treatment consisted of exercise and rehabilitation for his scoliosis, and daily application of topical mometasone. The pain and itch gradual improved.

A 47-year-old man had had a chronic itch on his back for 2 years. He had no history of trauma to the site, nor did he recall applying topical products to that area.

He was otherwise healthy. He worked as an electrician and said he occasionally experienced cervical and back pain while working.

An examination revealed two grayish-brown ovoid patches on the upper back, each 5 cm to 7 cm in diameter (Figure 1).

DIAGNOSIS: NOTALGIA PARESTHETICA

Figure 1. Two gray-brown ovoid patches on the back and on the right infrascapular region were associated with chronic itch.

Chronic, brown-gray, itching patches on the back in an adult patient are characteristic of notalgia paresthetica.

Conditions that may be included in the differential diagnosis but that do not match the presentation in this patient include the following:

  • Cutaneous sarcoidosis, which may exhibit several morphologies, but itching would be unusual
  • Chronic discoid lupus erythematosus, characterized by scarring and atrophic plaques, but mainly on the face and scalp
  • Contact dermatitis, an itchy eczematous condition, characterized by scaly erythematous plaques
  • Lichen amyloidosis, a variant of cutaneous amyloidosis characterized by the deposition of amyloid or amyloid-like proteins in the dermis, resulting in red-brown hyperkeratotic lichenoid papules, usually on the pretibial surfaces.

CAUSES AND MANAGEMENT

Notalgia paresthetica is a neuropathic syndrome of the skin of the middle of the back characterized by localized pruritus.1–3 Although common, it often goes undiagnosed.1,3,4 It tends to be chronic, with periodic remissions and exacerbations.

Notalgia paresthetica is thought to be a sensory neuropathy and may result from compression of the posterior rami of spinal nerve segments T2 to T6. Slight degenerative changes are often but not always observed, and their clinical significance is uncertain.1,2,4 The condition affects people of all races and both sexes, usually adults ages 40 to 80.

Clinically, it presents as localized pruritus on the back, usually within the dermatomes T2 to T6.5 Examination reveals a hyperpigmented patch, sometimes with excoriations.5

Diagnosis is based on clinical findings. Laboratory tests are not useful. Imaging is not needed, but magnetic resonance imaging and evaluation by an orthopedic surgeon are appropriate when there is chronic focal pain. Skin biopsy is usually not necessary, although it may be useful in some patients to exclude other conditions. When biopsy is done, macular amyloidosis or postinflammatory hyperpigmentation is seen.

Treatment is difficult. Topical steroids and oral antihistamines are usually ineffective,5 but topical capsaicin may provide temporary relief.3 The most recommended treatment in patients with notalgia paresthetica and underlying spinal disease is evaluation and conservative management of the spinal disease, including progressive exercise and rehabilitation.2 Other therapies include oxcarbazepine, gabapentin, transcutaneous electrical nerve stimulation, phototherapy,6 and botulinum toxin injection.

TREATMENT OF OUR PATIENT

In our patient, an orthopedic evaluation revealed cervicothoracic scoliosis. He underwent 6 months of conservative treatment under the care of his family physician and a dermatologist. Treatment consisted of exercise and rehabilitation for his scoliosis, and daily application of topical mometasone. The pain and itch gradual improved.

References
  1. Pérez-Pérez LC. General features and treatment of notalgia paresthetica. Skinmed 2011; 9:353358.
  2. Fleischer AB, Meade TJ, Fleischer AB. Notalgia paresthetica: successful treatment with exercises. Acta Derm Venereol 2011; 91:356357.
  3. Wallengren J, Klinker M. Successful treatment of notalgia paresthetica with topical capsaicin: vehicle-controlled, double-blind, crossover study. J Am Acad Dermatol 1995; 32:287289.
  4. Savk O, Savk E. Investigation of spinal pathology in notalgia paresthetica. J Am Acad Dermatol 2005; 52:10851087.
  5. Raison-Peyron N, Meunier L, Acevedo M, Meynadier J. Notalgia paresthetica: clinical, physiopathological and therapeutic aspects. A study of 12 cases. J Eur Acad Dermatol Venereol 1999; 12:215221.
  6. Pérez-Pérez L, Allegue F, Fabeiro JM, Caeiro JL, Zulaica A. Notalgia paresthesica successfully treated with narrow-band UVB: report of five cases. J Eur Acad Dermatol Venereol 2010; 24:730732.
References
  1. Pérez-Pérez LC. General features and treatment of notalgia paresthetica. Skinmed 2011; 9:353358.
  2. Fleischer AB, Meade TJ, Fleischer AB. Notalgia paresthetica: successful treatment with exercises. Acta Derm Venereol 2011; 91:356357.
  3. Wallengren J, Klinker M. Successful treatment of notalgia paresthetica with topical capsaicin: vehicle-controlled, double-blind, crossover study. J Am Acad Dermatol 1995; 32:287289.
  4. Savk O, Savk E. Investigation of spinal pathology in notalgia paresthetica. J Am Acad Dermatol 2005; 52:10851087.
  5. Raison-Peyron N, Meunier L, Acevedo M, Meynadier J. Notalgia paresthetica: clinical, physiopathological and therapeutic aspects. A study of 12 cases. J Eur Acad Dermatol Venereol 1999; 12:215221.
  6. Pérez-Pérez L, Allegue F, Fabeiro JM, Caeiro JL, Zulaica A. Notalgia paresthesica successfully treated with narrow-band UVB: report of five cases. J Eur Acad Dermatol Venereol 2010; 24:730732.
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Chronic itch on the upper back, with pain
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Odynophagia, peripheral facial nerve paralysis, mucocutaneous lesions

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Odynophagia, peripheral facial nerve paralysis, mucocutaneous lesions

A 54-year-old woman presented with a 7-day history of odynophagia, pharyngeal swelling, and painful skin lesions on her left ear. She had been on antiretroviral therapy for human immunodeficiency virus infection but had not been fully compliant with the treatment.

See editorial

Figure 1. Vesicular eruption on the left concha and external auditory meatus.

On examination, she had painful erythematous vesicles and pustules on the left auricle and in the external auditory canal (Figure 1), as well as small vesicles and circumscribed erosions on the left anterior twothirds of her tongue (Figure 2) and left palate. Facial sensory function was normal; however, she had lagophthalmos, a flattened nasolabial fold, ptosis of the oral commissure, and a loss of the forehead wrinkles on the left side of her face—all signs of peripheral facial nerve paralysis.

Q: Which is the most likely diagnosis?

  • Ramsay Hunt syndrome
  • Herpes simplex
  • Contact dermatitis
  • Malignant external otitis
  • Erysipelas

Figure 2. Multiple vesicles and pustules on the left side of the tongue and soft palate.

A: This patient had Ramsay Hunt syndrome, also known as herpes zoster oticus. It is a rare complication of herpes zoster in which the reactivation of latent varicella-zoster virus infection in the geniculate ganglion causes the triad of ipsilateral facial paralysis, ear pain, and vesicles in the auditory canal and auricle. Taste perception, hearing (eg, tinnitus, hyperacusis), and lacrimation can be affected.1

Ramsay Hunt syndrome is generally considered a polycranial neuropathy of cranial nerves VII (facial) and VIII (acoustic). In some cases other cranial neuropathies may be present and may involve cranial nerves V (trigeminal), IX (glossopharyngeal), and X (vagus). Vestibular disturbances such as vertigo are also often reported. It is more severe in patients with immune deficiency. Because the classic symptoms are not always present at the onset, the syndrome can be misdiagnosed.

DIAGNOSIS

Once the vesicular rash caused by herpes zoster has appeared, the diagnosis is usually readily apparent. The other main disease to consider in the differential diagnosis is herpes simplex. Herpes zoster infection is characterized by a painful sensory prodrome, dermatomal distribution, and lack of a history of a similar rash. However, if the patient has had a similar vesicular rash in the same location, then recurrent zosteriform herpes simplex should be considered. A noninfectious cause to consider is contact dermatitis. However, contact dermatitis usually produces intense itch rather than pain.

If the clinical presentation is uncertain, then viral culture, direct immunofluorescence testing, and a polymerase chain reaction assay is indicated to confirm the diagnosis. Polymerase chain reaction testing is the most sensitive test.3

TREATMENT

The rapid start of antiviral therapy is particularly critical in immunocompromised patients,4 even if the vesicles have been present for 72 hours. Immunocompromised patients with Ramsay Hunt syndrome and other forms of complicated herpes zoster infection should be hospitalized for intravenous acyclovir therapy.

Corticosteroids and oral acyclovir (10 mg/kg three times daily for 7 days) are commonly used in Ramsay Hunt syndrome. In a recent review,5 combination therapy with a corticosteroid and intravenous acyclovir did not show a benefit over corticosteroids alone in promoting resolution of facial neuropathy after 6 months.5 However, randomized clinical trials are needed to evaluate both therapies.

Although antiviral therapy reduces pain associated with acute neuritis, pain syndromes associated with herpes zoster can still be severe. Nonsteroidal antiinflammatory drugs and acetaminophen are useful for mild pain, either alone or in combination with a weak opioid analgesic (eg, tramadol, codeine). For moderate to severe pain that disturbs sleep, a stronger opioid analgesic (eg, oxycodone, morphine) may be necessary.6

Vestibular suppressants may be helpful if vestibular symptoms are severe. Temporary relief of otalgia may be achieved by applying a local anesthetic to the trigger point, if in the external auditory canal. Carbamazepine may be helpful, especially in cases of idiopathic geniculate neuralgia.7

OTHER CONSIDERATIONS

Once drug therapy is started, the patient should be seen at 2 weeks, 6 weeks, and 3 months to monitor the evolution of nerve paralysis.8

References
  1. Mishell JH, Applebaum EL. Ramsay-Hunt syndrome in a patient with HIV infection. Otolaryngol Head Neck Surg 1990; 102:177179.
  2. Adour KK. Otological complications of herpes zoster. Ann Neurol 1994; 35(suppl):S62S64.
  3. Stránská R, Schuurman R, de Vos M, van Loon AM. Routine use of a highly automated and internally controlled real-time PCR assay for the diagnosis of herpes simplex and varicella-zoster virus infections. J Clin Virol 2004; 30:3944.
  4. Miller GG, Dummer JS. Herpes simplex and varicella zoster viruses: forgotten but not gone. Am J Transplant 2007; 7:741747.
  5. Uscategui T, Dorée C, Chamberlain IJ, Burton MJ. Antiviral therapy for Ramsay Hunt syndrome (herpes zoster oticus with facial palsy) in adults. Cochrane Database Syst Rev 2008;(4):CD006851.
  6. Dworkin RH, Barbano RL, Tyring SK, et al. A randomized, placebo-controlled trial of oxycodone and of gabapentin for acute pain in herpes zoster. Pain 2009; 142:209217.
  7. Edelsberg JS, Lord C, Oster G. Systematic review and meta-analysis of efficacy, safety, and tolerability data from randomized controlled trials of drugs used to treat postherpetic neuralgia. Ann Pharmacother 2011; 45:14831490.
  8. Ryu EW, Lee HY, Lee SY, Park MS, Yeo SG. Clinical manifestations and prognosis of patients with Ramsay Hunt syndrome. Am J Otolaryngol 2012; 33:313318.
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Department of Dermatology, Ramón y Cajal University Hospital, Madrid, Spain

Angela Miguel-Morrondo, MD
Department of Vascular Surgery, Ramón y Cajal Hospital, Madrid, Spain

Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology. Ramón y Cajal Hospital, Madrid, Spain

Address: Emiliano Grillo, MD, Department of Dermatology, Ramón y Cajal University Hospital, Carretera Colmenar km 9.100, 28034 Madrid, Spain; e-mail doctorgrillo85@hotmail.com

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Department of Dermatology, Ramón y Cajal University Hospital, Madrid, Spain

Angela Miguel-Morrondo, MD
Department of Vascular Surgery, Ramón y Cajal Hospital, Madrid, Spain

Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology. Ramón y Cajal Hospital, Madrid, Spain

Address: Emiliano Grillo, MD, Department of Dermatology, Ramón y Cajal University Hospital, Carretera Colmenar km 9.100, 28034 Madrid, Spain; e-mail doctorgrillo85@hotmail.com

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Department of Dermatology, Ramón y Cajal University Hospital, Madrid, Spain

Angela Miguel-Morrondo, MD
Department of Vascular Surgery, Ramón y Cajal Hospital, Madrid, Spain

Sergio Vañó-Galván, MD, PhD
Department of Dermatology, Ramón y Cajal Hospital, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology. Ramón y Cajal Hospital, Madrid, Spain

Address: Emiliano Grillo, MD, Department of Dermatology, Ramón y Cajal University Hospital, Carretera Colmenar km 9.100, 28034 Madrid, Spain; e-mail doctorgrillo85@hotmail.com

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A 54-year-old woman presented with a 7-day history of odynophagia, pharyngeal swelling, and painful skin lesions on her left ear. She had been on antiretroviral therapy for human immunodeficiency virus infection but had not been fully compliant with the treatment.

See editorial

Figure 1. Vesicular eruption on the left concha and external auditory meatus.

On examination, she had painful erythematous vesicles and pustules on the left auricle and in the external auditory canal (Figure 1), as well as small vesicles and circumscribed erosions on the left anterior twothirds of her tongue (Figure 2) and left palate. Facial sensory function was normal; however, she had lagophthalmos, a flattened nasolabial fold, ptosis of the oral commissure, and a loss of the forehead wrinkles on the left side of her face—all signs of peripheral facial nerve paralysis.

Q: Which is the most likely diagnosis?

  • Ramsay Hunt syndrome
  • Herpes simplex
  • Contact dermatitis
  • Malignant external otitis
  • Erysipelas

Figure 2. Multiple vesicles and pustules on the left side of the tongue and soft palate.

A: This patient had Ramsay Hunt syndrome, also known as herpes zoster oticus. It is a rare complication of herpes zoster in which the reactivation of latent varicella-zoster virus infection in the geniculate ganglion causes the triad of ipsilateral facial paralysis, ear pain, and vesicles in the auditory canal and auricle. Taste perception, hearing (eg, tinnitus, hyperacusis), and lacrimation can be affected.1

Ramsay Hunt syndrome is generally considered a polycranial neuropathy of cranial nerves VII (facial) and VIII (acoustic). In some cases other cranial neuropathies may be present and may involve cranial nerves V (trigeminal), IX (glossopharyngeal), and X (vagus). Vestibular disturbances such as vertigo are also often reported. It is more severe in patients with immune deficiency. Because the classic symptoms are not always present at the onset, the syndrome can be misdiagnosed.

DIAGNOSIS

Once the vesicular rash caused by herpes zoster has appeared, the diagnosis is usually readily apparent. The other main disease to consider in the differential diagnosis is herpes simplex. Herpes zoster infection is characterized by a painful sensory prodrome, dermatomal distribution, and lack of a history of a similar rash. However, if the patient has had a similar vesicular rash in the same location, then recurrent zosteriform herpes simplex should be considered. A noninfectious cause to consider is contact dermatitis. However, contact dermatitis usually produces intense itch rather than pain.

If the clinical presentation is uncertain, then viral culture, direct immunofluorescence testing, and a polymerase chain reaction assay is indicated to confirm the diagnosis. Polymerase chain reaction testing is the most sensitive test.3

TREATMENT

The rapid start of antiviral therapy is particularly critical in immunocompromised patients,4 even if the vesicles have been present for 72 hours. Immunocompromised patients with Ramsay Hunt syndrome and other forms of complicated herpes zoster infection should be hospitalized for intravenous acyclovir therapy.

Corticosteroids and oral acyclovir (10 mg/kg three times daily for 7 days) are commonly used in Ramsay Hunt syndrome. In a recent review,5 combination therapy with a corticosteroid and intravenous acyclovir did not show a benefit over corticosteroids alone in promoting resolution of facial neuropathy after 6 months.5 However, randomized clinical trials are needed to evaluate both therapies.

Although antiviral therapy reduces pain associated with acute neuritis, pain syndromes associated with herpes zoster can still be severe. Nonsteroidal antiinflammatory drugs and acetaminophen are useful for mild pain, either alone or in combination with a weak opioid analgesic (eg, tramadol, codeine). For moderate to severe pain that disturbs sleep, a stronger opioid analgesic (eg, oxycodone, morphine) may be necessary.6

Vestibular suppressants may be helpful if vestibular symptoms are severe. Temporary relief of otalgia may be achieved by applying a local anesthetic to the trigger point, if in the external auditory canal. Carbamazepine may be helpful, especially in cases of idiopathic geniculate neuralgia.7

OTHER CONSIDERATIONS

Once drug therapy is started, the patient should be seen at 2 weeks, 6 weeks, and 3 months to monitor the evolution of nerve paralysis.8

A 54-year-old woman presented with a 7-day history of odynophagia, pharyngeal swelling, and painful skin lesions on her left ear. She had been on antiretroviral therapy for human immunodeficiency virus infection but had not been fully compliant with the treatment.

See editorial

Figure 1. Vesicular eruption on the left concha and external auditory meatus.

On examination, she had painful erythematous vesicles and pustules on the left auricle and in the external auditory canal (Figure 1), as well as small vesicles and circumscribed erosions on the left anterior twothirds of her tongue (Figure 2) and left palate. Facial sensory function was normal; however, she had lagophthalmos, a flattened nasolabial fold, ptosis of the oral commissure, and a loss of the forehead wrinkles on the left side of her face—all signs of peripheral facial nerve paralysis.

Q: Which is the most likely diagnosis?

  • Ramsay Hunt syndrome
  • Herpes simplex
  • Contact dermatitis
  • Malignant external otitis
  • Erysipelas

Figure 2. Multiple vesicles and pustules on the left side of the tongue and soft palate.

A: This patient had Ramsay Hunt syndrome, also known as herpes zoster oticus. It is a rare complication of herpes zoster in which the reactivation of latent varicella-zoster virus infection in the geniculate ganglion causes the triad of ipsilateral facial paralysis, ear pain, and vesicles in the auditory canal and auricle. Taste perception, hearing (eg, tinnitus, hyperacusis), and lacrimation can be affected.1

Ramsay Hunt syndrome is generally considered a polycranial neuropathy of cranial nerves VII (facial) and VIII (acoustic). In some cases other cranial neuropathies may be present and may involve cranial nerves V (trigeminal), IX (glossopharyngeal), and X (vagus). Vestibular disturbances such as vertigo are also often reported. It is more severe in patients with immune deficiency. Because the classic symptoms are not always present at the onset, the syndrome can be misdiagnosed.

DIAGNOSIS

Once the vesicular rash caused by herpes zoster has appeared, the diagnosis is usually readily apparent. The other main disease to consider in the differential diagnosis is herpes simplex. Herpes zoster infection is characterized by a painful sensory prodrome, dermatomal distribution, and lack of a history of a similar rash. However, if the patient has had a similar vesicular rash in the same location, then recurrent zosteriform herpes simplex should be considered. A noninfectious cause to consider is contact dermatitis. However, contact dermatitis usually produces intense itch rather than pain.

If the clinical presentation is uncertain, then viral culture, direct immunofluorescence testing, and a polymerase chain reaction assay is indicated to confirm the diagnosis. Polymerase chain reaction testing is the most sensitive test.3

TREATMENT

The rapid start of antiviral therapy is particularly critical in immunocompromised patients,4 even if the vesicles have been present for 72 hours. Immunocompromised patients with Ramsay Hunt syndrome and other forms of complicated herpes zoster infection should be hospitalized for intravenous acyclovir therapy.

Corticosteroids and oral acyclovir (10 mg/kg three times daily for 7 days) are commonly used in Ramsay Hunt syndrome. In a recent review,5 combination therapy with a corticosteroid and intravenous acyclovir did not show a benefit over corticosteroids alone in promoting resolution of facial neuropathy after 6 months.5 However, randomized clinical trials are needed to evaluate both therapies.

Although antiviral therapy reduces pain associated with acute neuritis, pain syndromes associated with herpes zoster can still be severe. Nonsteroidal antiinflammatory drugs and acetaminophen are useful for mild pain, either alone or in combination with a weak opioid analgesic (eg, tramadol, codeine). For moderate to severe pain that disturbs sleep, a stronger opioid analgesic (eg, oxycodone, morphine) may be necessary.6

Vestibular suppressants may be helpful if vestibular symptoms are severe. Temporary relief of otalgia may be achieved by applying a local anesthetic to the trigger point, if in the external auditory canal. Carbamazepine may be helpful, especially in cases of idiopathic geniculate neuralgia.7

OTHER CONSIDERATIONS

Once drug therapy is started, the patient should be seen at 2 weeks, 6 weeks, and 3 months to monitor the evolution of nerve paralysis.8

References
  1. Mishell JH, Applebaum EL. Ramsay-Hunt syndrome in a patient with HIV infection. Otolaryngol Head Neck Surg 1990; 102:177179.
  2. Adour KK. Otological complications of herpes zoster. Ann Neurol 1994; 35(suppl):S62S64.
  3. Stránská R, Schuurman R, de Vos M, van Loon AM. Routine use of a highly automated and internally controlled real-time PCR assay for the diagnosis of herpes simplex and varicella-zoster virus infections. J Clin Virol 2004; 30:3944.
  4. Miller GG, Dummer JS. Herpes simplex and varicella zoster viruses: forgotten but not gone. Am J Transplant 2007; 7:741747.
  5. Uscategui T, Dorée C, Chamberlain IJ, Burton MJ. Antiviral therapy for Ramsay Hunt syndrome (herpes zoster oticus with facial palsy) in adults. Cochrane Database Syst Rev 2008;(4):CD006851.
  6. Dworkin RH, Barbano RL, Tyring SK, et al. A randomized, placebo-controlled trial of oxycodone and of gabapentin for acute pain in herpes zoster. Pain 2009; 142:209217.
  7. Edelsberg JS, Lord C, Oster G. Systematic review and meta-analysis of efficacy, safety, and tolerability data from randomized controlled trials of drugs used to treat postherpetic neuralgia. Ann Pharmacother 2011; 45:14831490.
  8. Ryu EW, Lee HY, Lee SY, Park MS, Yeo SG. Clinical manifestations and prognosis of patients with Ramsay Hunt syndrome. Am J Otolaryngol 2012; 33:313318.
References
  1. Mishell JH, Applebaum EL. Ramsay-Hunt syndrome in a patient with HIV infection. Otolaryngol Head Neck Surg 1990; 102:177179.
  2. Adour KK. Otological complications of herpes zoster. Ann Neurol 1994; 35(suppl):S62S64.
  3. Stránská R, Schuurman R, de Vos M, van Loon AM. Routine use of a highly automated and internally controlled real-time PCR assay for the diagnosis of herpes simplex and varicella-zoster virus infections. J Clin Virol 2004; 30:3944.
  4. Miller GG, Dummer JS. Herpes simplex and varicella zoster viruses: forgotten but not gone. Am J Transplant 2007; 7:741747.
  5. Uscategui T, Dorée C, Chamberlain IJ, Burton MJ. Antiviral therapy for Ramsay Hunt syndrome (herpes zoster oticus with facial palsy) in adults. Cochrane Database Syst Rev 2008;(4):CD006851.
  6. Dworkin RH, Barbano RL, Tyring SK, et al. A randomized, placebo-controlled trial of oxycodone and of gabapentin for acute pain in herpes zoster. Pain 2009; 142:209217.
  7. Edelsberg JS, Lord C, Oster G. Systematic review and meta-analysis of efficacy, safety, and tolerability data from randomized controlled trials of drugs used to treat postherpetic neuralgia. Ann Pharmacother 2011; 45:14831490.
  8. Ryu EW, Lee HY, Lee SY, Park MS, Yeo SG. Clinical manifestations and prognosis of patients with Ramsay Hunt syndrome. Am J Otolaryngol 2012; 33:313318.
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A facial cutaneous horn

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A facial cutaneous horn

Figure 1. Grey-colored cutaneous horn over a pink-colored nodule on the left cheek.
A healthy 84-year-old woman is referred to the dermatology department with a 10-month history of an asymptomatic lesion on her left cheek that has grown progressively. The lesion appeared spontaneously and was not associated with trauma.

Figure 2. The keratotic component of the lesion has a hard consistency on palpation.
On examination, there is a 2-cm-long, keratotic, gray cutaneous horn over a pink nodule on the left cheek (Figures 1 and 2). There is no lymphadenopathy, and the patient has no other cutaneous abnormalities.

The patient says she has had intense sunlight exposure during her life, due to agricultural work.

Q: What is the most likely diagnosis?

  • Basal cell carcinoma
  • Cutaneous leishmaniasis
  • Squamous cell carcinoma
  • Viral wart
  • Pyoderma gangrenosum

A: Squamous cell carcinoma is the most likely diagnosis. It is the second most common form of skin cancer (after basal cell carcinoma) that arises on the sun-exposed skin of elderly individuals.

Basal cell carcinoma usually presents as a slow-growing, pearly nodule with telangiectasias over the surface, but without a keratotic component. Cutaneous leishmaniasis is caused by a protozoan and is transmitted by the bite of a sandfly. It presents as a crusted papule or ulcer at the site of the bite, only rarely presenting as a cutaneous horn. Viral warts may present as horns (filiform warts), but the horn is slender and is usually around the lips, eyelids, or nares. Although warts can occur at any age, they are more frequently seen among school-aged children, and they peak between ages 12 and 16. Pyoderma gangrenosum is considered a reactive dermatosis sometimes secondary to a systemic disease such as inflammatory bowel disease. It usually presents as a small, red papule or pustule that progresses to a larger ulcerative lesion.

SQUAMOUS CELL CARCINOMA: CAUSES, RISK FACTORS

Exposure to ultraviolet radiation is the most common cause of squamous cell carcinoma. Other risk factors include exposure to ionizing radiation, human papilloma virus, thermal injury, burns, immunosuppression, exposure to chemical carcinogens, and diseases such as xeroderma pigmentosum, oculocutaneous albinism, and junctional epidermolysis bullosa.1,2 Organ transplantation is another significant risk factor, and cutaneous squamous cell carcinoma is the most common malignancy in renal transplant recipients.3

People born in areas that receive high amounts of ultraviolet radiation from the sun have a risk of squamous cell carcinoma three times higher than people who move to those areas in adulthood.1 Occupational exposure to ultraviolet radiation is also implicated in this type of cancer.

CLINICAL APPEARANCE

Clinically, squamous cell carcinoma of the skin may manifest as a variety of primary morphologies with or without associated symptoms. The characteristic invasive squamous cell carcinoma is a raised, firm, pink or flesh-colored keratotic papule or plaque arising on sun-exposed skin. Approximately 70% of all squamous cell carcinomas occur on the head and neck, with an additional 15% found on the upper extremities. Surface changes may include scaling, ulceration, crusting, or the presence of a cutaneous horn. Squamous cell carcinoma can also present as an eczematous patch that does not resolve with emollient or topical steroids. Less commonly, it may manifest as a pink cutaneous nodule with no overlying surface changes. Often, the patient has a background of severely sun-damaged skin, including solar elastosis, mottled dyspigmentation, telangiectasia, and multiple actinic keratoses.

MAKING THE DIAGNOSIS

Skin biopsy usually confirms the clinical diagnosis. Histologic examination shows neoplastic proliferation of atypical keratinocytes extending into the dermis, with large hyperchromatic and pleomorphic nuclei.

Imaging is not routinely indicated for diagnosing cutaneous squamous cell carcinoma. However, radiologic imaging should be obtained in patients with regional lymphadenopathy or neurologic symptoms suggestive of perineural involvement.

Other lesions found at the base of a cutaneous horn include actinic keratosis, keratoacanthoma, basal cell carcinoma, and benign lesions such as seborrheic keratosis and verruca vulgaris.4,5

MANAGEMENT

Most cutaneous squamous cell carcinomas are easily treated, and the rate of cure is high. Treatment options include topical chemotherapy, cryosurgery, electrodesiccation and curettage, surgical excision, Mohs micrographic surgery, radiotherapy, and photodynamic therapy. Fractionated radiation treatment may be preferred for patients who are unable to tolerate surgery or who have inoperable tumors, and it may provide favorable functional and cosmetic results.1

Photodynamic therapy and topical chemotherapy with imiquimod are currently not recommended for invasive squamous cell carcinoma.

Low-risk tumors are usually cured with surgical therapy. However, patients who develop one squamous cell carcinoma have a 40% risk of developing additional squamous cell carcinomas within the next 2 years. This risk is likely even greater as more time elapses. Thus, patients with a history of this cancer should be evaluated with a complete skin examination every 6 to 12 months.

OUR PATIENT’S TREATMENT

Our patient underwent total surgical excision of the lesion with a safety margin of 0.5 cm. Histologic results confirmed the diagnosis of squamous cell carcinoma with tumor-free margins. No clinical relapse was observed after 1 year of follow-up.

References
  1. Alam M, Ratner D. Cutaneous squamous-cell carcinoma. N Engl J Med 2001; 344:975983.
  2. Mallipeddi R, Keane FM, Mcgrath JA, Mayou BJ, Eady RA. Increased risk of squamous cell carcinoma in junctional epidermolysis bullosa. J Eur Acad Dermatol Venereol 2004; 18:521526.
  3. Rubel JR, Milford EL, Abdi R. Cutaneous neoplasms in renal transplant recipients. Eur J Dermatol 2002; 12:532535.
  4. Aydogan K, Ozbek S, Balaban Adim S, Tokgöz N. Irritated seborrhoeic keratosis presenting as a cutaneous horn. J Eur Acad Dermatol Venereol 2006; 20:626628.
  5. Vañó-Galván S, Sanchez-Olaso A. Images in clinical medicine. Squamous-cell carcinoma manifesting as a cutaneous horn. N Engl J Med 2008; 359:e10.
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Sergio Vañó-Galván, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Alicia Marqués, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Ernesto Muñoz-Zato, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Address: Sergio Vañó-Galván, MD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; sergiovano@yahoo.es

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Sergio Vañó-Galván, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Alicia Marqués, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Ernesto Muñoz-Zato, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Address: Sergio Vañó-Galván, MD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; sergiovano@yahoo.es

Author and Disclosure Information

Sergio Vañó-Galván, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Alicia Marqués, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Ernesto Muñoz-Zato, MD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Pedro Jaén, MD, PhD
Department of Dermatology, Ramón y Cajal University Hospital, University of Alcalá, Madrid, Spain

Address: Sergio Vañó-Galván, MD, Department of Dermatology, Ramón y Cajal Hospital, University of Alcalá, Carretera Colmenar Viejo, km 9.100, 28034 Madrid, Spain; sergiovano@yahoo.es

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Figure 1. Grey-colored cutaneous horn over a pink-colored nodule on the left cheek.
A healthy 84-year-old woman is referred to the dermatology department with a 10-month history of an asymptomatic lesion on her left cheek that has grown progressively. The lesion appeared spontaneously and was not associated with trauma.

Figure 2. The keratotic component of the lesion has a hard consistency on palpation.
On examination, there is a 2-cm-long, keratotic, gray cutaneous horn over a pink nodule on the left cheek (Figures 1 and 2). There is no lymphadenopathy, and the patient has no other cutaneous abnormalities.

The patient says she has had intense sunlight exposure during her life, due to agricultural work.

Q: What is the most likely diagnosis?

  • Basal cell carcinoma
  • Cutaneous leishmaniasis
  • Squamous cell carcinoma
  • Viral wart
  • Pyoderma gangrenosum

A: Squamous cell carcinoma is the most likely diagnosis. It is the second most common form of skin cancer (after basal cell carcinoma) that arises on the sun-exposed skin of elderly individuals.

Basal cell carcinoma usually presents as a slow-growing, pearly nodule with telangiectasias over the surface, but without a keratotic component. Cutaneous leishmaniasis is caused by a protozoan and is transmitted by the bite of a sandfly. It presents as a crusted papule or ulcer at the site of the bite, only rarely presenting as a cutaneous horn. Viral warts may present as horns (filiform warts), but the horn is slender and is usually around the lips, eyelids, or nares. Although warts can occur at any age, they are more frequently seen among school-aged children, and they peak between ages 12 and 16. Pyoderma gangrenosum is considered a reactive dermatosis sometimes secondary to a systemic disease such as inflammatory bowel disease. It usually presents as a small, red papule or pustule that progresses to a larger ulcerative lesion.

SQUAMOUS CELL CARCINOMA: CAUSES, RISK FACTORS

Exposure to ultraviolet radiation is the most common cause of squamous cell carcinoma. Other risk factors include exposure to ionizing radiation, human papilloma virus, thermal injury, burns, immunosuppression, exposure to chemical carcinogens, and diseases such as xeroderma pigmentosum, oculocutaneous albinism, and junctional epidermolysis bullosa.1,2 Organ transplantation is another significant risk factor, and cutaneous squamous cell carcinoma is the most common malignancy in renal transplant recipients.3

People born in areas that receive high amounts of ultraviolet radiation from the sun have a risk of squamous cell carcinoma three times higher than people who move to those areas in adulthood.1 Occupational exposure to ultraviolet radiation is also implicated in this type of cancer.

CLINICAL APPEARANCE

Clinically, squamous cell carcinoma of the skin may manifest as a variety of primary morphologies with or without associated symptoms. The characteristic invasive squamous cell carcinoma is a raised, firm, pink or flesh-colored keratotic papule or plaque arising on sun-exposed skin. Approximately 70% of all squamous cell carcinomas occur on the head and neck, with an additional 15% found on the upper extremities. Surface changes may include scaling, ulceration, crusting, or the presence of a cutaneous horn. Squamous cell carcinoma can also present as an eczematous patch that does not resolve with emollient or topical steroids. Less commonly, it may manifest as a pink cutaneous nodule with no overlying surface changes. Often, the patient has a background of severely sun-damaged skin, including solar elastosis, mottled dyspigmentation, telangiectasia, and multiple actinic keratoses.

MAKING THE DIAGNOSIS

Skin biopsy usually confirms the clinical diagnosis. Histologic examination shows neoplastic proliferation of atypical keratinocytes extending into the dermis, with large hyperchromatic and pleomorphic nuclei.

Imaging is not routinely indicated for diagnosing cutaneous squamous cell carcinoma. However, radiologic imaging should be obtained in patients with regional lymphadenopathy or neurologic symptoms suggestive of perineural involvement.

Other lesions found at the base of a cutaneous horn include actinic keratosis, keratoacanthoma, basal cell carcinoma, and benign lesions such as seborrheic keratosis and verruca vulgaris.4,5

MANAGEMENT

Most cutaneous squamous cell carcinomas are easily treated, and the rate of cure is high. Treatment options include topical chemotherapy, cryosurgery, electrodesiccation and curettage, surgical excision, Mohs micrographic surgery, radiotherapy, and photodynamic therapy. Fractionated radiation treatment may be preferred for patients who are unable to tolerate surgery or who have inoperable tumors, and it may provide favorable functional and cosmetic results.1

Photodynamic therapy and topical chemotherapy with imiquimod are currently not recommended for invasive squamous cell carcinoma.

Low-risk tumors are usually cured with surgical therapy. However, patients who develop one squamous cell carcinoma have a 40% risk of developing additional squamous cell carcinomas within the next 2 years. This risk is likely even greater as more time elapses. Thus, patients with a history of this cancer should be evaluated with a complete skin examination every 6 to 12 months.

OUR PATIENT’S TREATMENT

Our patient underwent total surgical excision of the lesion with a safety margin of 0.5 cm. Histologic results confirmed the diagnosis of squamous cell carcinoma with tumor-free margins. No clinical relapse was observed after 1 year of follow-up.

Figure 1. Grey-colored cutaneous horn over a pink-colored nodule on the left cheek.
A healthy 84-year-old woman is referred to the dermatology department with a 10-month history of an asymptomatic lesion on her left cheek that has grown progressively. The lesion appeared spontaneously and was not associated with trauma.

Figure 2. The keratotic component of the lesion has a hard consistency on palpation.
On examination, there is a 2-cm-long, keratotic, gray cutaneous horn over a pink nodule on the left cheek (Figures 1 and 2). There is no lymphadenopathy, and the patient has no other cutaneous abnormalities.

The patient says she has had intense sunlight exposure during her life, due to agricultural work.

Q: What is the most likely diagnosis?

  • Basal cell carcinoma
  • Cutaneous leishmaniasis
  • Squamous cell carcinoma
  • Viral wart
  • Pyoderma gangrenosum

A: Squamous cell carcinoma is the most likely diagnosis. It is the second most common form of skin cancer (after basal cell carcinoma) that arises on the sun-exposed skin of elderly individuals.

Basal cell carcinoma usually presents as a slow-growing, pearly nodule with telangiectasias over the surface, but without a keratotic component. Cutaneous leishmaniasis is caused by a protozoan and is transmitted by the bite of a sandfly. It presents as a crusted papule or ulcer at the site of the bite, only rarely presenting as a cutaneous horn. Viral warts may present as horns (filiform warts), but the horn is slender and is usually around the lips, eyelids, or nares. Although warts can occur at any age, they are more frequently seen among school-aged children, and they peak between ages 12 and 16. Pyoderma gangrenosum is considered a reactive dermatosis sometimes secondary to a systemic disease such as inflammatory bowel disease. It usually presents as a small, red papule or pustule that progresses to a larger ulcerative lesion.

SQUAMOUS CELL CARCINOMA: CAUSES, RISK FACTORS

Exposure to ultraviolet radiation is the most common cause of squamous cell carcinoma. Other risk factors include exposure to ionizing radiation, human papilloma virus, thermal injury, burns, immunosuppression, exposure to chemical carcinogens, and diseases such as xeroderma pigmentosum, oculocutaneous albinism, and junctional epidermolysis bullosa.1,2 Organ transplantation is another significant risk factor, and cutaneous squamous cell carcinoma is the most common malignancy in renal transplant recipients.3

People born in areas that receive high amounts of ultraviolet radiation from the sun have a risk of squamous cell carcinoma three times higher than people who move to those areas in adulthood.1 Occupational exposure to ultraviolet radiation is also implicated in this type of cancer.

CLINICAL APPEARANCE

Clinically, squamous cell carcinoma of the skin may manifest as a variety of primary morphologies with or without associated symptoms. The characteristic invasive squamous cell carcinoma is a raised, firm, pink or flesh-colored keratotic papule or plaque arising on sun-exposed skin. Approximately 70% of all squamous cell carcinomas occur on the head and neck, with an additional 15% found on the upper extremities. Surface changes may include scaling, ulceration, crusting, or the presence of a cutaneous horn. Squamous cell carcinoma can also present as an eczematous patch that does not resolve with emollient or topical steroids. Less commonly, it may manifest as a pink cutaneous nodule with no overlying surface changes. Often, the patient has a background of severely sun-damaged skin, including solar elastosis, mottled dyspigmentation, telangiectasia, and multiple actinic keratoses.

MAKING THE DIAGNOSIS

Skin biopsy usually confirms the clinical diagnosis. Histologic examination shows neoplastic proliferation of atypical keratinocytes extending into the dermis, with large hyperchromatic and pleomorphic nuclei.

Imaging is not routinely indicated for diagnosing cutaneous squamous cell carcinoma. However, radiologic imaging should be obtained in patients with regional lymphadenopathy or neurologic symptoms suggestive of perineural involvement.

Other lesions found at the base of a cutaneous horn include actinic keratosis, keratoacanthoma, basal cell carcinoma, and benign lesions such as seborrheic keratosis and verruca vulgaris.4,5

MANAGEMENT

Most cutaneous squamous cell carcinomas are easily treated, and the rate of cure is high. Treatment options include topical chemotherapy, cryosurgery, electrodesiccation and curettage, surgical excision, Mohs micrographic surgery, radiotherapy, and photodynamic therapy. Fractionated radiation treatment may be preferred for patients who are unable to tolerate surgery or who have inoperable tumors, and it may provide favorable functional and cosmetic results.1

Photodynamic therapy and topical chemotherapy with imiquimod are currently not recommended for invasive squamous cell carcinoma.

Low-risk tumors are usually cured with surgical therapy. However, patients who develop one squamous cell carcinoma have a 40% risk of developing additional squamous cell carcinomas within the next 2 years. This risk is likely even greater as more time elapses. Thus, patients with a history of this cancer should be evaluated with a complete skin examination every 6 to 12 months.

OUR PATIENT’S TREATMENT

Our patient underwent total surgical excision of the lesion with a safety margin of 0.5 cm. Histologic results confirmed the diagnosis of squamous cell carcinoma with tumor-free margins. No clinical relapse was observed after 1 year of follow-up.

References
  1. Alam M, Ratner D. Cutaneous squamous-cell carcinoma. N Engl J Med 2001; 344:975983.
  2. Mallipeddi R, Keane FM, Mcgrath JA, Mayou BJ, Eady RA. Increased risk of squamous cell carcinoma in junctional epidermolysis bullosa. J Eur Acad Dermatol Venereol 2004; 18:521526.
  3. Rubel JR, Milford EL, Abdi R. Cutaneous neoplasms in renal transplant recipients. Eur J Dermatol 2002; 12:532535.
  4. Aydogan K, Ozbek S, Balaban Adim S, Tokgöz N. Irritated seborrhoeic keratosis presenting as a cutaneous horn. J Eur Acad Dermatol Venereol 2006; 20:626628.
  5. Vañó-Galván S, Sanchez-Olaso A. Images in clinical medicine. Squamous-cell carcinoma manifesting as a cutaneous horn. N Engl J Med 2008; 359:e10.
References
  1. Alam M, Ratner D. Cutaneous squamous-cell carcinoma. N Engl J Med 2001; 344:975983.
  2. Mallipeddi R, Keane FM, Mcgrath JA, Mayou BJ, Eady RA. Increased risk of squamous cell carcinoma in junctional epidermolysis bullosa. J Eur Acad Dermatol Venereol 2004; 18:521526.
  3. Rubel JR, Milford EL, Abdi R. Cutaneous neoplasms in renal transplant recipients. Eur J Dermatol 2002; 12:532535.
  4. Aydogan K, Ozbek S, Balaban Adim S, Tokgöz N. Irritated seborrhoeic keratosis presenting as a cutaneous horn. J Eur Acad Dermatol Venereol 2006; 20:626628.
  5. Vañó-Galván S, Sanchez-Olaso A. Images in clinical medicine. Squamous-cell carcinoma manifesting as a cutaneous horn. N Engl J Med 2008; 359:e10.
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