Sharon Worcester

CHICAGO – Combination therapy with oxandrolone and propranolol can attenuate burn-induced growth arrest and increase growth rate in severely burned children, according to findings from a prospective, randomized clinical trial.

Of 612 children with burns over at least 30% of their total body surface area (average of more than 50%), 103 were randomized to receive treatment with both oxandrolone and propranolol, 67 received oxandrolone alone, 194 received propranolol alone, and 248 served as controls. After a minimum of 1 year of treatment, the average growth rate was 5.9 cm in the control group and 7.6 cm in the group receiving combination therapy, Dr. David N. Herndon of the University of Texas Medical Branch at Galveston reported at the annual meeting of the American Surgical Association.

“The rate of growth with combination therapy was significantly greater than with either of the individual drugs alone,” Dr. Herndon said.

Further, the period of growth arrest was significantly shorter – by 84 days – among those in the combination-treatment group, compared with those in the control group.

Study subjects were children treated at Shriners Hospitals for Children – Galveston from 1997 to 2015. Boys aged 6 months to 14 years and girls aged 6 months to 12 years were included to eliminate the variable onset of postpubescent growth delay. About two-thirds in each group were boys, and the ages in the patient groups were similar. Mortality was low and was similar across the groups, as was hospital length of stay.

Dr. Herndon and his colleagues controlled for heterogeneous burn distribution between the groups in the course of their analyses, as well as age.

In children with severe, extensive burn injury, the hypercatabolic response is mediated by increased production of catecholamines and corticosteroids, coupled with decreased production of testosterone. This contributes to growth arrest and to decreased strength for up to 2 years after burn injury, he explained. Children with burns over 50% of their total body surface routinely survive acute hospitalization but, at 3 months post injury, are thin, have difficulty walking, and require occupational and physical therapy to help them perform even the simplest activities of daily living.

At 1 year, a raised inflammatory mass covers their wounds, they experience itching, and they have, in large part, stunted growth; there is severe loss of lean body mass and strength, and fracture risk is increased, Dr. Herndon said.

In previous work, he and his colleagues showed that administration of propranolol at an average dose of 4 mg/kg per day for 1 year decreased cardiac work and resting energy expenditure while increasing peripheral lean mass. Further, they found that the testosterone analog oxandrolone, given at 0.1 mg/kg twice per day for 1 year, improved lean body mass accretion and bone mineral content.

The current study was conducted to test the effects of administering both agents in combination.

“The combined use of oxandrolone and propranolol in severely burned children confers an additional benefit on growth over either treatment alone,” Dr. Herndon said, adding that the additive effects of combination therapy may be due to the effects of oxandrolone on bone growth and the anti-inflammatory effects of propranolol.

“The additional benefits point out mechanistic changes that may be eventful in the treatment of hypermetabolism generally and in inflammatory states,” he concluded.

Dr. Herndon reported having no disclosures.

sworcester@frontlinemedcom.com

CHICAGO – Combination therapy with oxandrolone and propranolol can attenuate burn-induced growth arrest and increase growth rate in severely burned children, according to findings from a prospective, randomized clinical trial.

Of 612 children with burns over at least 30% of their total body surface area (average of more than 50%), 103 were randomized to receive treatment with both oxandrolone and propranolol, 67 received oxandrolone alone, 194 received propranolol alone, and 248 served as controls. After a minimum of 1 year of treatment, the average growth rate was 5.9 cm in the control group and 7.6 cm in the group receiving combination therapy, Dr. David N. Herndon of the University of Texas Medical Branch at Galveston reported at the annual meeting of the American Surgical Association.

“The rate of growth with combination therapy was significantly greater than with either of the individual drugs alone,” Dr. Herndon said.

Further, the period of growth arrest was significantly shorter – by 84 days – among those in the combination-treatment group, compared with those in the control group.

Study subjects were children treated at Shriners Hospitals for Children – Galveston from 1997 to 2015. Boys aged 6 months to 14 years and girls aged 6 months to 12 years were included to eliminate the variable onset of postpubescent growth delay. About two-thirds in each group were boys, and the ages in the patient groups were similar. Mortality was low and was similar across the groups, as was hospital length of stay.

Dr. Herndon and his colleagues controlled for heterogeneous burn distribution between the groups in the course of their analyses, as well as age.

In children with severe, extensive burn injury, the hypercatabolic response is mediated by increased production of catecholamines and corticosteroids, coupled with decreased production of testosterone. This contributes to growth arrest and to decreased strength for up to 2 years after burn injury, he explained. Children with burns over 50% of their total body surface routinely survive acute hospitalization but, at 3 months post injury, are thin, have difficulty walking, and require occupational and physical therapy to help them perform even the simplest activities of daily living.

At 1 year, a raised inflammatory mass covers their wounds, they experience itching, and they have, in large part, stunted growth; there is severe loss of lean body mass and strength, and fracture risk is increased, Dr. Herndon said.

In previous work, he and his colleagues showed that administration of propranolol at an average dose of 4 mg/kg per day for 1 year decreased cardiac work and resting energy expenditure while increasing peripheral lean mass. Further, they found that the testosterone analog oxandrolone, given at 0.1 mg/kg twice per day for 1 year, improved lean body mass accretion and bone mineral content.

The current study was conducted to test the effects of administering both agents in combination.

“The combined use of oxandrolone and propranolol in severely burned children confers an additional benefit on growth over either treatment alone,” Dr. Herndon said, adding that the additive effects of combination therapy may be due to the effects of oxandrolone on bone growth and the anti-inflammatory effects of propranolol.

“The additional benefits point out mechanistic changes that may be eventful in the treatment of hypermetabolism generally and in inflammatory states,” he concluded.

Dr. Herndon reported having no disclosures.

sworcester@frontlinemedcom.com

CHICAGO – Combination therapy with oxandrolone and propranolol can attenuate burn-induced growth arrest and increase growth rate in severely burned children, according to findings from a prospective, randomized clinical trial.

Of 612 children with burns over at least 30% of their total body surface area (average of more than 50%), 103 were randomized to receive treatment with both oxandrolone and propranolol, 67 received oxandrolone alone, 194 received propranolol alone, and 248 served as controls. After a minimum of 1 year of treatment, the average growth rate was 5.9 cm in the control group and 7.6 cm in the group receiving combination therapy, Dr. David N. Herndon of the University of Texas Medical Branch at Galveston reported at the annual meeting of the American Surgical Association.

“The rate of growth with combination therapy was significantly greater than with either of the individual drugs alone,” Dr. Herndon said.

Further, the period of growth arrest was significantly shorter – by 84 days – among those in the combination-treatment group, compared with those in the control group.

Study subjects were children treated at Shriners Hospitals for Children – Galveston from 1997 to 2015. Boys aged 6 months to 14 years and girls aged 6 months to 12 years were included to eliminate the variable onset of postpubescent growth delay. About two-thirds in each group were boys, and the ages in the patient groups were similar. Mortality was low and was similar across the groups, as was hospital length of stay.

Dr. Herndon and his colleagues controlled for heterogeneous burn distribution between the groups in the course of their analyses, as well as age.

In children with severe, extensive burn injury, the hypercatabolic response is mediated by increased production of catecholamines and corticosteroids, coupled with decreased production of testosterone. This contributes to growth arrest and to decreased strength for up to 2 years after burn injury, he explained. Children with burns over 50% of their total body surface routinely survive acute hospitalization but, at 3 months post injury, are thin, have difficulty walking, and require occupational and physical therapy to help them perform even the simplest activities of daily living.

At 1 year, a raised inflammatory mass covers their wounds, they experience itching, and they have, in large part, stunted growth; there is severe loss of lean body mass and strength, and fracture risk is increased, Dr. Herndon said.

In previous work, he and his colleagues showed that administration of propranolol at an average dose of 4 mg/kg per day for 1 year decreased cardiac work and resting energy expenditure while increasing peripheral lean mass. Further, they found that the testosterone analog oxandrolone, given at 0.1 mg/kg twice per day for 1 year, improved lean body mass accretion and bone mineral content.

The current study was conducted to test the effects of administering both agents in combination.

“The combined use of oxandrolone and propranolol in severely burned children confers an additional benefit on growth over either treatment alone,” Dr. Herndon said, adding that the additive effects of combination therapy may be due to the effects of oxandrolone on bone growth and the anti-inflammatory effects of propranolol.

“The additional benefits point out mechanistic changes that may be eventful in the treatment of hypermetabolism generally and in inflammatory states,” he concluded.

Dr. Herndon reported having no disclosures.

sworcester@frontlinemedcom.com

ATLANTA – Nearly half of 2,100 multiple sclerosis (MS) patients enrolled at baseline in the Sonya Slifka Longitudinal Multiple Sclerosis Study reported experiencing emotional distress, and 9% of those patients reported difficulties with accessing mental health services.

Younger patients, those with more recently diagnosed illness, and those with more frequent MS relapses were more likely to experience emotional distress, Dr. Laura Safar of Brigham and Women’s Hospital, Boston, said at the annual meeting of the American Psychiatric Association.

HUNG KUO CHUN/Thinkstock

The Sonya Slifka study was an 8-year population-based cohort study that, at last report, included more than 4,000 MS patients from across the United States, with varying disease duration. Dr. Safar reported on baseline mental health data from the study.

Patients with MS may experience symptoms involving any part of the central nervous system, including psychiatric symptoms such as depression, anxiety, and cognitive disorders, she said, noting that these are highly prevalent, but often go unrecognized and untreated by primary care doctors and neurologists.

Prior studies have suggested that depression occurs in 25%-80% of patients, depending on the study setting. The rates are higher in those with MS than in the general population or in those with other neurologic and chronic medical conditions, she said.

In the Sonya Slifka study, 77% of patients were women with an average age of 50 years and disease duration ranging from 1 week to 64 years. Most were white. The disease distribution was representative of that seen in the general MS population, with most (57%) having relapsing-remitting disease, 25% having secondary progressive disease, and the remaining patients having primary progressive disease or progressing-relapsing disease (Mult Scler. 2006 Feb;12[1]:24-38).

Reported disability levels varied from none/very mild to severe and requiring a wheelchair or scooter or being bedridden.

Of the 48% of patients reporting emotional distress, most reported having mild to moderate distress, but 40% reported severe distress.

Nearly half (46%) of patients reported accomplishing less than normal because of emotional difficulties, and 31% said they worked less carefully than usual.

Emotional distress was more common in patients who were younger, divorced or never married, unemployed, and in those with lower education and income levels. Emotional distress was associated with shorter duration of illness, with having multiple relapses in the prior year (highest rates were among those with five or more relapses), and with moderate disability level.

Emotional distress was also associated with poorer perceived general health, and those with higher levels of emotional distress tended to experience all or many of the symptoms on the baseline questionnaire.

Further, those with emotional distress tended to lack health insurance and to have problems accessing health care and necessary prescription medications. About one-fourth of the patients had seen a mental health professional in the prior year and nearly 8% wanted to; 2% said they had been referred to a mental health professional, and 93% of these patients had emotional distress, including 6% with severe distress.

Reasons given by these patients for not seeing a mental health professional were cost, difficulty getting an appointment, and too long of a wait.

The findings suggest that in clinical settings it is important to screen MS patients for emotional distress and depression and to treat or refer accordingly, Dr. Safar said.

“As we know from other medical illnesses, this will improve adherence to MS treatment and will improve the prognosis,” she added.

Dr. Safar reported having no disclosures.

sworcester@frontlinemedcom.com

ATLANTA – Nearly half of 2,100 multiple sclerosis (MS) patients enrolled at baseline in the Sonya Slifka Longitudinal Multiple Sclerosis Study reported experiencing emotional distress, and 9% of those patients reported difficulties with accessing mental health services.

Younger patients, those with more recently diagnosed illness, and those with more frequent MS relapses were more likely to experience emotional distress, Dr. Laura Safar of Brigham and Women’s Hospital, Boston, said at the annual meeting of the American Psychiatric Association.

HUNG KUO CHUN/Thinkstock

The Sonya Slifka study was an 8-year population-based cohort study that, at last report, included more than 4,000 MS patients from across the United States, with varying disease duration. Dr. Safar reported on baseline mental health data from the study.

Patients with MS may experience symptoms involving any part of the central nervous system, including psychiatric symptoms such as depression, anxiety, and cognitive disorders, she said, noting that these are highly prevalent, but often go unrecognized and untreated by primary care doctors and neurologists.

Prior studies have suggested that depression occurs in 25%-80% of patients, depending on the study setting. The rates are higher in those with MS than in the general population or in those with other neurologic and chronic medical conditions, she said.

In the Sonya Slifka study, 77% of patients were women with an average age of 50 years and disease duration ranging from 1 week to 64 years. Most were white. The disease distribution was representative of that seen in the general MS population, with most (57%) having relapsing-remitting disease, 25% having secondary progressive disease, and the remaining patients having primary progressive disease or progressing-relapsing disease (Mult Scler. 2006 Feb;12[1]:24-38).

Reported disability levels varied from none/very mild to severe and requiring a wheelchair or scooter or being bedridden.

Of the 48% of patients reporting emotional distress, most reported having mild to moderate distress, but 40% reported severe distress.

Nearly half (46%) of patients reported accomplishing less than normal because of emotional difficulties, and 31% said they worked less carefully than usual.

Emotional distress was more common in patients who were younger, divorced or never married, unemployed, and in those with lower education and income levels. Emotional distress was associated with shorter duration of illness, with having multiple relapses in the prior year (highest rates were among those with five or more relapses), and with moderate disability level.

Emotional distress was also associated with poorer perceived general health, and those with higher levels of emotional distress tended to experience all or many of the symptoms on the baseline questionnaire.

Further, those with emotional distress tended to lack health insurance and to have problems accessing health care and necessary prescription medications. About one-fourth of the patients had seen a mental health professional in the prior year and nearly 8% wanted to; 2% said they had been referred to a mental health professional, and 93% of these patients had emotional distress, including 6% with severe distress.

Reasons given by these patients for not seeing a mental health professional were cost, difficulty getting an appointment, and too long of a wait.

The findings suggest that in clinical settings it is important to screen MS patients for emotional distress and depression and to treat or refer accordingly, Dr. Safar said.

“As we know from other medical illnesses, this will improve adherence to MS treatment and will improve the prognosis,” she added.

Dr. Safar reported having no disclosures.

sworcester@frontlinemedcom.com

ATLANTA – Nearly half of 2,100 multiple sclerosis (MS) patients enrolled at baseline in the Sonya Slifka Longitudinal Multiple Sclerosis Study reported experiencing emotional distress, and 9% of those patients reported difficulties with accessing mental health services.

Younger patients, those with more recently diagnosed illness, and those with more frequent MS relapses were more likely to experience emotional distress, Dr. Laura Safar of Brigham and Women’s Hospital, Boston, said at the annual meeting of the American Psychiatric Association.

HUNG KUO CHUN/Thinkstock

The Sonya Slifka study was an 8-year population-based cohort study that, at last report, included more than 4,000 MS patients from across the United States, with varying disease duration. Dr. Safar reported on baseline mental health data from the study.

Patients with MS may experience symptoms involving any part of the central nervous system, including psychiatric symptoms such as depression, anxiety, and cognitive disorders, she said, noting that these are highly prevalent, but often go unrecognized and untreated by primary care doctors and neurologists.

Prior studies have suggested that depression occurs in 25%-80% of patients, depending on the study setting. The rates are higher in those with MS than in the general population or in those with other neurologic and chronic medical conditions, she said.

In the Sonya Slifka study, 77% of patients were women with an average age of 50 years and disease duration ranging from 1 week to 64 years. Most were white. The disease distribution was representative of that seen in the general MS population, with most (57%) having relapsing-remitting disease, 25% having secondary progressive disease, and the remaining patients having primary progressive disease or progressing-relapsing disease (Mult Scler. 2006 Feb;12[1]:24-38).

Reported disability levels varied from none/very mild to severe and requiring a wheelchair or scooter or being bedridden.

Of the 48% of patients reporting emotional distress, most reported having mild to moderate distress, but 40% reported severe distress.

Nearly half (46%) of patients reported accomplishing less than normal because of emotional difficulties, and 31% said they worked less carefully than usual.

Emotional distress was more common in patients who were younger, divorced or never married, unemployed, and in those with lower education and income levels. Emotional distress was associated with shorter duration of illness, with having multiple relapses in the prior year (highest rates were among those with five or more relapses), and with moderate disability level.

Emotional distress was also associated with poorer perceived general health, and those with higher levels of emotional distress tended to experience all or many of the symptoms on the baseline questionnaire.

Further, those with emotional distress tended to lack health insurance and to have problems accessing health care and necessary prescription medications. About one-fourth of the patients had seen a mental health professional in the prior year and nearly 8% wanted to; 2% said they had been referred to a mental health professional, and 93% of these patients had emotional distress, including 6% with severe distress.

Reasons given by these patients for not seeing a mental health professional were cost, difficulty getting an appointment, and too long of a wait.

The findings suggest that in clinical settings it is important to screen MS patients for emotional distress and depression and to treat or refer accordingly, Dr. Safar said.

“As we know from other medical illnesses, this will improve adherence to MS treatment and will improve the prognosis,” she added.

Dr. Safar reported having no disclosures.

sworcester@frontlinemedcom.com

The recent reclassification of encapsulated follicular variant of papillary thyroid carcinoma (EFVPTC) as noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) – an action taken to better reflect the very low risk of adverse events associated with these tumors – has important clinical and psychological implications for patients.

“Even though physicians know that most thyroid cancers have an excellent prognosis, the impact on a patient of being given a diagnosis of cancer should not be underestimated,” Dr. Peter Angelos, professor of surgery and chief of endocrine surgery at the University of Chicago, said in an interview. “It is, however, critical for doctors and patients to understand that this change from ‘thyroid cancer’ to a ‘benign thyroid nodule,’ is not something that can be determined prior to surgery. Patients will still need thyroid operations to determine if their indeterminate nodules have cancer in them or not.”

The change in nomenclature followed an international, multidisciplinary, retrospective study of patients with thyroid nodules diagnosed as EFVPTC. Such patients are usually treated as having conventional thyroid cancer. The study included 109 patients with noninvasive EFVPTC who were followed for 10-26 years, and 101 with invasive EFVPTC who were followed for 1-18 years. At median follow-up of 13 years, all of the 109 patients with noninvasive EFVPTC were alive, and based on consensus diagnostic criteria developed by an Endocrine Pathology Society working group – a multinational panel of 24 thyroid pathologists – they had no evidence of disease, reported Dr. Yuri E. Nikiforov of the University of Pittsburgh and colleagues (JAMA Oncol. 2016 April 14. doi: 10.1001/jamaoncol.2016.0386).

Most of those patients (67%) were treated only with lobectomy, and none received radioiodine (RAI) treatment.

Of the 101 with invasive EFVPTC, 12 experienced an adverse event, including 5 who developed distant (lung and/or bone) metastases. Two died from the disease, one had a lymph node recurrence, one had persistent disease, and five had detectable serum thyroglobulin and were considered to have indeterminate or biochemically incomplete response to therapy, the investigators said.

Based on the findings in the noninvasive EFVPTC patients, the recommended nomenclature change was adopted to reflect the main morphological features of, and lack of invasion of, the benign tumors as well as their very low risk of adverse outcome. To assist in the diagnosis of NIFTP in routine pathology practice, a simplified three-point diagnostic nuclear scoring scheme based on the six main consensus nuclear features of the tumors was developed and validated; the scoring scheme yielded sensitivity of 98.6%, specificity of 90.1%, and overall classification accuracy of 94.3% for NIFTP.

The study involved a review of digitized histologic slides collected at 13 sites in 5 countries. The pathologists who composed the working group conducted the review and consulted in a series of teleconferences and face-to-face meetings to establish the consensus criteria. They measured the frequency of adverse outcomes, including death from disease, distant or locoregional metastases, and structural or biochemical recurrence.

The findings suggest that “clinical management of patients with NIFTP can be deescalated because they are unlikely to benefit from immediate completion thyroidectomy and RAI therapy,” the investigators said.

“Staging would be unnecessary. In addition to eliminating the psychological impact of the diagnosis of cancer, this would reduce complications of total thyroidectomy, risk of secondary tumors following RAI therapy, and the overall cost of health care. Avoidance of RAI treatment alone would save between $5,000 and $8,500 per patient (based on U.S. cost),” they wrote, adding that an estimated 45,000 patients worldwide each year will be affected by this reclassification, resulting in significant reduction in “psychological burden, medical overtreatment and expense, and other clinical consequences associated with a cancer diagnosis.”

Dr. Martha A. Zeiger, professor of surgery at Johns Hopkins University, Baltimore, agreed that the change has important implications for patients.

“With the advent of new nomenclature for encapsulated follicular variant of papillary thyroid cancer, namely that it is now considered a benign tumor, thousands of patients who have carried this original diagnosis of cancer can breathe a sigh of relief. Our new understanding will also decrease the number of patients undergoing more extensive surgery and many can now be treated with a thyroid lobectomy only,” she said in an interview.

One thing the new nomenclature doesn’t do, however, is solve the problem of the suspicious or indeterminate thyroid fine needle aspiration diagnosis, she noted.

“Clouding the landscape even further is the fact that many of our commonly used molecular diagnostics were based on studies in which encapsulated follicular variant of papillary thyroid cancer was considered malignant, and were included in the analysis. Because of this, diagnostic molecular tools will likely now require a renewed scrutiny as to their true efficacy in differentiating benign from malignant tumors,” she said.

Dr. Nikiforov is a consultant for Quest Diagnostics. A coauthor, Dr. Sylvia Asa, is a member of the medical advisory board of Leica Aperio, and another coauthor, Dr. Virginia LiVolsi, is a consultant for Veracyte Inc. The project used a facility supported by the National Cancer Institute, and molecular analysis was supported in part by funds from the University of Pittsburgh Cancer Institute and the University of Pittsburgh Medical Center. The Endocrine Pathology Society working group conference was supported by a grant from CBLPath Inc. Dr. Angelos and Dr. Zeiger reported having no disclosures.

sworcester@frontlinemedcom.com

The recent reclassification of encapsulated follicular variant of papillary thyroid carcinoma (EFVPTC) as noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) – an action taken to better reflect the very low risk of adverse events associated with these tumors – has important clinical and psychological implications for patients.

“Even though physicians know that most thyroid cancers have an excellent prognosis, the impact on a patient of being given a diagnosis of cancer should not be underestimated,” Dr. Peter Angelos, professor of surgery and chief of endocrine surgery at the University of Chicago, said in an interview. “It is, however, critical for doctors and patients to understand that this change from ‘thyroid cancer’ to a ‘benign thyroid nodule,’ is not something that can be determined prior to surgery. Patients will still need thyroid operations to determine if their indeterminate nodules have cancer in them or not.”

The change in nomenclature followed an international, multidisciplinary, retrospective study of patients with thyroid nodules diagnosed as EFVPTC. Such patients are usually treated as having conventional thyroid cancer. The study included 109 patients with noninvasive EFVPTC who were followed for 10-26 years, and 101 with invasive EFVPTC who were followed for 1-18 years. At median follow-up of 13 years, all of the 109 patients with noninvasive EFVPTC were alive, and based on consensus diagnostic criteria developed by an Endocrine Pathology Society working group – a multinational panel of 24 thyroid pathologists – they had no evidence of disease, reported Dr. Yuri E. Nikiforov of the University of Pittsburgh and colleagues (JAMA Oncol. 2016 April 14. doi: 10.1001/jamaoncol.2016.0386).

Most of those patients (67%) were treated only with lobectomy, and none received radioiodine (RAI) treatment.

Of the 101 with invasive EFVPTC, 12 experienced an adverse event, including 5 who developed distant (lung and/or bone) metastases. Two died from the disease, one had a lymph node recurrence, one had persistent disease, and five had detectable serum thyroglobulin and were considered to have indeterminate or biochemically incomplete response to therapy, the investigators said.

Based on the findings in the noninvasive EFVPTC patients, the recommended nomenclature change was adopted to reflect the main morphological features of, and lack of invasion of, the benign tumors as well as their very low risk of adverse outcome. To assist in the diagnosis of NIFTP in routine pathology practice, a simplified three-point diagnostic nuclear scoring scheme based on the six main consensus nuclear features of the tumors was developed and validated; the scoring scheme yielded sensitivity of 98.6%, specificity of 90.1%, and overall classification accuracy of 94.3% for NIFTP.

The study involved a review of digitized histologic slides collected at 13 sites in 5 countries. The pathologists who composed the working group conducted the review and consulted in a series of teleconferences and face-to-face meetings to establish the consensus criteria. They measured the frequency of adverse outcomes, including death from disease, distant or locoregional metastases, and structural or biochemical recurrence.

The findings suggest that “clinical management of patients with NIFTP can be deescalated because they are unlikely to benefit from immediate completion thyroidectomy and RAI therapy,” the investigators said.

“Staging would be unnecessary. In addition to eliminating the psychological impact of the diagnosis of cancer, this would reduce complications of total thyroidectomy, risk of secondary tumors following RAI therapy, and the overall cost of health care. Avoidance of RAI treatment alone would save between $5,000 and $8,500 per patient (based on U.S. cost),” they wrote, adding that an estimated 45,000 patients worldwide each year will be affected by this reclassification, resulting in significant reduction in “psychological burden, medical overtreatment and expense, and other clinical consequences associated with a cancer diagnosis.”

Dr. Martha A. Zeiger, professor of surgery at Johns Hopkins University, Baltimore, agreed that the change has important implications for patients.

“With the advent of new nomenclature for encapsulated follicular variant of papillary thyroid cancer, namely that it is now considered a benign tumor, thousands of patients who have carried this original diagnosis of cancer can breathe a sigh of relief. Our new understanding will also decrease the number of patients undergoing more extensive surgery and many can now be treated with a thyroid lobectomy only,” she said in an interview.

One thing the new nomenclature doesn’t do, however, is solve the problem of the suspicious or indeterminate thyroid fine needle aspiration diagnosis, she noted.

“Clouding the landscape even further is the fact that many of our commonly used molecular diagnostics were based on studies in which encapsulated follicular variant of papillary thyroid cancer was considered malignant, and were included in the analysis. Because of this, diagnostic molecular tools will likely now require a renewed scrutiny as to their true efficacy in differentiating benign from malignant tumors,” she said.

Dr. Nikiforov is a consultant for Quest Diagnostics. A coauthor, Dr. Sylvia Asa, is a member of the medical advisory board of Leica Aperio, and another coauthor, Dr. Virginia LiVolsi, is a consultant for Veracyte Inc. The project used a facility supported by the National Cancer Institute, and molecular analysis was supported in part by funds from the University of Pittsburgh Cancer Institute and the University of Pittsburgh Medical Center. The Endocrine Pathology Society working group conference was supported by a grant from CBLPath Inc. Dr. Angelos and Dr. Zeiger reported having no disclosures.

sworcester@frontlinemedcom.com

The recent reclassification of encapsulated follicular variant of papillary thyroid carcinoma (EFVPTC) as noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) – an action taken to better reflect the very low risk of adverse events associated with these tumors – has important clinical and psychological implications for patients.

“Even though physicians know that most thyroid cancers have an excellent prognosis, the impact on a patient of being given a diagnosis of cancer should not be underestimated,” Dr. Peter Angelos, professor of surgery and chief of endocrine surgery at the University of Chicago, said in an interview. “It is, however, critical for doctors and patients to understand that this change from ‘thyroid cancer’ to a ‘benign thyroid nodule,’ is not something that can be determined prior to surgery. Patients will still need thyroid operations to determine if their indeterminate nodules have cancer in them or not.”

The change in nomenclature followed an international, multidisciplinary, retrospective study of patients with thyroid nodules diagnosed as EFVPTC. Such patients are usually treated as having conventional thyroid cancer. The study included 109 patients with noninvasive EFVPTC who were followed for 10-26 years, and 101 with invasive EFVPTC who were followed for 1-18 years. At median follow-up of 13 years, all of the 109 patients with noninvasive EFVPTC were alive, and based on consensus diagnostic criteria developed by an Endocrine Pathology Society working group – a multinational panel of 24 thyroid pathologists – they had no evidence of disease, reported Dr. Yuri E. Nikiforov of the University of Pittsburgh and colleagues (JAMA Oncol. 2016 April 14. doi: 10.1001/jamaoncol.2016.0386).

Most of those patients (67%) were treated only with lobectomy, and none received radioiodine (RAI) treatment.

Of the 101 with invasive EFVPTC, 12 experienced an adverse event, including 5 who developed distant (lung and/or bone) metastases. Two died from the disease, one had a lymph node recurrence, one had persistent disease, and five had detectable serum thyroglobulin and were considered to have indeterminate or biochemically incomplete response to therapy, the investigators said.

Based on the findings in the noninvasive EFVPTC patients, the recommended nomenclature change was adopted to reflect the main morphological features of, and lack of invasion of, the benign tumors as well as their very low risk of adverse outcome. To assist in the diagnosis of NIFTP in routine pathology practice, a simplified three-point diagnostic nuclear scoring scheme based on the six main consensus nuclear features of the tumors was developed and validated; the scoring scheme yielded sensitivity of 98.6%, specificity of 90.1%, and overall classification accuracy of 94.3% for NIFTP.

The study involved a review of digitized histologic slides collected at 13 sites in 5 countries. The pathologists who composed the working group conducted the review and consulted in a series of teleconferences and face-to-face meetings to establish the consensus criteria. They measured the frequency of adverse outcomes, including death from disease, distant or locoregional metastases, and structural or biochemical recurrence.

The findings suggest that “clinical management of patients with NIFTP can be deescalated because they are unlikely to benefit from immediate completion thyroidectomy and RAI therapy,” the investigators said.

“Staging would be unnecessary. In addition to eliminating the psychological impact of the diagnosis of cancer, this would reduce complications of total thyroidectomy, risk of secondary tumors following RAI therapy, and the overall cost of health care. Avoidance of RAI treatment alone would save between $5,000 and $8,500 per patient (based on U.S. cost),” they wrote, adding that an estimated 45,000 patients worldwide each year will be affected by this reclassification, resulting in significant reduction in “psychological burden, medical overtreatment and expense, and other clinical consequences associated with a cancer diagnosis.”

Dr. Martha A. Zeiger, professor of surgery at Johns Hopkins University, Baltimore, agreed that the change has important implications for patients.

“With the advent of new nomenclature for encapsulated follicular variant of papillary thyroid cancer, namely that it is now considered a benign tumor, thousands of patients who have carried this original diagnosis of cancer can breathe a sigh of relief. Our new understanding will also decrease the number of patients undergoing more extensive surgery and many can now be treated with a thyroid lobectomy only,” she said in an interview.

One thing the new nomenclature doesn’t do, however, is solve the problem of the suspicious or indeterminate thyroid fine needle aspiration diagnosis, she noted.

“Clouding the landscape even further is the fact that many of our commonly used molecular diagnostics were based on studies in which encapsulated follicular variant of papillary thyroid cancer was considered malignant, and were included in the analysis. Because of this, diagnostic molecular tools will likely now require a renewed scrutiny as to their true efficacy in differentiating benign from malignant tumors,” she said.

Dr. Nikiforov is a consultant for Quest Diagnostics. A coauthor, Dr. Sylvia Asa, is a member of the medical advisory board of Leica Aperio, and another coauthor, Dr. Virginia LiVolsi, is a consultant for Veracyte Inc. The project used a facility supported by the National Cancer Institute, and molecular analysis was supported in part by funds from the University of Pittsburgh Cancer Institute and the University of Pittsburgh Medical Center. The Endocrine Pathology Society working group conference was supported by a grant from CBLPath Inc. Dr. Angelos and Dr. Zeiger reported having no disclosures.

sworcester@frontlinemedcom.com

CHICAGO – Preadmission and postdischarge factors were important predictors of postoperative readmission in a large cohort of surgical patients, but the hospital course had little incremental impact on either readmissions or postdischarge complications in the cohort, according to a retrospective study of Veterans Affairs data.

The findings suggest that efforts to reduce postoperative readmissions should focus on enhanced postdischarge surveillance and early intervention, Dr. Melanie S. Morris of the University of Alabama at Birmingham reported at the annual meeting of the American Surgical Association.

Dr. Morris

To assess the relative contributions of patient factors, operative characteristics, and postoperative hospital course on readmissions, she and her colleagues evaluated 243,956 general, vascular, and orthopedic surgery patients in 121 VA hospitals. The overall readmission rate among the cohort was 11.1%, and for general, vascular, and orthopedic surgeries, the rates were 12.9%, 15.4%, and 7.6%, respectively; the average postoperative length of stay was 6.9 days, and 6.1% of patients experienced a predischarge complication.

Almost all readmissions occurred within 2 weeks of discharge, and for general surgery patients, most occurred within 1 week. The readmission rate for vascular surgery patients remained high beyond the 2-week mark.

An examination of the reasons for readmission showed that wound complications were the most common reason for readmission, and this was particularly true for vascular surgery patients, in whom 44% of readmissions were for wound complications, Dr. Morris said.

Gastrointestinal complications including ileus and obstruction were also common, accounting for nearly 28% of readmissions among general surgery patients, she said.

Importantly, when including preoperative data (such as demographics, comorbidities, social and behavioral factors, labs and vital signs, and planned procedure type), the variability in readmissions could only be explained 8.6% of the time, she said.

“Adding in operative data, such as procedure complexity and intraoperative blood transfusions, as well as postoperative course, added very little to our predictive ability. Including both of those groups, we could only explain 10% of the variation in readmission,” she said.

Including postdischarge data such as complications and emergency department utilization in the model increased predictive ability to 18%.

R² and C-statistics comparing the sequentially built model showed that demographics and comorbidities contributed the most to predicting readmission risk, Dr. Morris said.

Modeling based on readmission reason and specialty improved predictive ability. For example, almost 12% of readmissions for wound complications among vascular surgery patients were predictable.

“Our best predictive ability was for orthopedic patients who were readmitted with pneumonia. We were able to predict that 14% of the time,” she said.

The findings were derived by merging VA Surgical Quality Improvement Program data from inpatient operations performed between 2007 and 2014 and involving at least a 2-day postoperative hospital stay, with clinical data including laboratory findings, vitals, prior health care utilization, and postoperative complications.

“We then grouped our variables of interest into the following categories: preoperative, operative, postoperative but predischarge, and postdischarge,” she explained, noting that logistic models predicting 30-day readmission were constructed by sequentially adding groups into the model. Models were compared by way of adjusted R² and C-statistics.

Assuming postoperative readmissions are preventable suggests that they are linked to the quality of care during the index hospitalization. The current findings demonstrate the challenges in predicting readmissions, and are important given that hospitals with higher-than-expected readmission rates for certain diagnoses and procedures are fined by the Centers for Medicare & Medicaid Services; 54% of hospitals were fined in 2015, she said.

“Readmission is difficult to predict at the time of discharge despite exhaustive statistical modeling with very granular clinical patient-level detail. Preoperative patient factors and postdischarge complications contribute the most to predictive models. Efforts to decrease readmissions should focus on modifiable patient-level factors, transitions of care, and minimizing postoperative complications,” she concluded.

Dr. Morris reported having no disclosures.

The complete manuscript of this presentation is anticipated to be published in Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – Preadmission and postdischarge factors were important predictors of postoperative readmission in a large cohort of surgical patients, but the hospital course had little incremental impact on either readmissions or postdischarge complications in the cohort, according to a retrospective study of Veterans Affairs data.

The findings suggest that efforts to reduce postoperative readmissions should focus on enhanced postdischarge surveillance and early intervention, Dr. Melanie S. Morris of the University of Alabama at Birmingham reported at the annual meeting of the American Surgical Association.

Dr. Morris

To assess the relative contributions of patient factors, operative characteristics, and postoperative hospital course on readmissions, she and her colleagues evaluated 243,956 general, vascular, and orthopedic surgery patients in 121 VA hospitals. The overall readmission rate among the cohort was 11.1%, and for general, vascular, and orthopedic surgeries, the rates were 12.9%, 15.4%, and 7.6%, respectively; the average postoperative length of stay was 6.9 days, and 6.1% of patients experienced a predischarge complication.

Almost all readmissions occurred within 2 weeks of discharge, and for general surgery patients, most occurred within 1 week. The readmission rate for vascular surgery patients remained high beyond the 2-week mark.

An examination of the reasons for readmission showed that wound complications were the most common reason for readmission, and this was particularly true for vascular surgery patients, in whom 44% of readmissions were for wound complications, Dr. Morris said.

Gastrointestinal complications including ileus and obstruction were also common, accounting for nearly 28% of readmissions among general surgery patients, she said.

Importantly, when including preoperative data (such as demographics, comorbidities, social and behavioral factors, labs and vital signs, and planned procedure type), the variability in readmissions could only be explained 8.6% of the time, she said.

“Adding in operative data, such as procedure complexity and intraoperative blood transfusions, as well as postoperative course, added very little to our predictive ability. Including both of those groups, we could only explain 10% of the variation in readmission,” she said.

Including postdischarge data such as complications and emergency department utilization in the model increased predictive ability to 18%.

R² and C-statistics comparing the sequentially built model showed that demographics and comorbidities contributed the most to predicting readmission risk, Dr. Morris said.

Modeling based on readmission reason and specialty improved predictive ability. For example, almost 12% of readmissions for wound complications among vascular surgery patients were predictable.

“Our best predictive ability was for orthopedic patients who were readmitted with pneumonia. We were able to predict that 14% of the time,” she said.

The findings were derived by merging VA Surgical Quality Improvement Program data from inpatient operations performed between 2007 and 2014 and involving at least a 2-day postoperative hospital stay, with clinical data including laboratory findings, vitals, prior health care utilization, and postoperative complications.

“We then grouped our variables of interest into the following categories: preoperative, operative, postoperative but predischarge, and postdischarge,” she explained, noting that logistic models predicting 30-day readmission were constructed by sequentially adding groups into the model. Models were compared by way of adjusted R² and C-statistics.

Assuming postoperative readmissions are preventable suggests that they are linked to the quality of care during the index hospitalization. The current findings demonstrate the challenges in predicting readmissions, and are important given that hospitals with higher-than-expected readmission rates for certain diagnoses and procedures are fined by the Centers for Medicare & Medicaid Services; 54% of hospitals were fined in 2015, she said.

“Readmission is difficult to predict at the time of discharge despite exhaustive statistical modeling with very granular clinical patient-level detail. Preoperative patient factors and postdischarge complications contribute the most to predictive models. Efforts to decrease readmissions should focus on modifiable patient-level factors, transitions of care, and minimizing postoperative complications,” she concluded.

Dr. Morris reported having no disclosures.

The complete manuscript of this presentation is anticipated to be published in Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – Preadmission and postdischarge factors were important predictors of postoperative readmission in a large cohort of surgical patients, but the hospital course had little incremental impact on either readmissions or postdischarge complications in the cohort, according to a retrospective study of Veterans Affairs data.

The findings suggest that efforts to reduce postoperative readmissions should focus on enhanced postdischarge surveillance and early intervention, Dr. Melanie S. Morris of the University of Alabama at Birmingham reported at the annual meeting of the American Surgical Association.

Dr. Morris

To assess the relative contributions of patient factors, operative characteristics, and postoperative hospital course on readmissions, she and her colleagues evaluated 243,956 general, vascular, and orthopedic surgery patients in 121 VA hospitals. The overall readmission rate among the cohort was 11.1%, and for general, vascular, and orthopedic surgeries, the rates were 12.9%, 15.4%, and 7.6%, respectively; the average postoperative length of stay was 6.9 days, and 6.1% of patients experienced a predischarge complication.

Almost all readmissions occurred within 2 weeks of discharge, and for general surgery patients, most occurred within 1 week. The readmission rate for vascular surgery patients remained high beyond the 2-week mark.

An examination of the reasons for readmission showed that wound complications were the most common reason for readmission, and this was particularly true for vascular surgery patients, in whom 44% of readmissions were for wound complications, Dr. Morris said.

Gastrointestinal complications including ileus and obstruction were also common, accounting for nearly 28% of readmissions among general surgery patients, she said.

Importantly, when including preoperative data (such as demographics, comorbidities, social and behavioral factors, labs and vital signs, and planned procedure type), the variability in readmissions could only be explained 8.6% of the time, she said.

“Adding in operative data, such as procedure complexity and intraoperative blood transfusions, as well as postoperative course, added very little to our predictive ability. Including both of those groups, we could only explain 10% of the variation in readmission,” she said.

Including postdischarge data such as complications and emergency department utilization in the model increased predictive ability to 18%.

R² and C-statistics comparing the sequentially built model showed that demographics and comorbidities contributed the most to predicting readmission risk, Dr. Morris said.

Modeling based on readmission reason and specialty improved predictive ability. For example, almost 12% of readmissions for wound complications among vascular surgery patients were predictable.

“Our best predictive ability was for orthopedic patients who were readmitted with pneumonia. We were able to predict that 14% of the time,” she said.

The findings were derived by merging VA Surgical Quality Improvement Program data from inpatient operations performed between 2007 and 2014 and involving at least a 2-day postoperative hospital stay, with clinical data including laboratory findings, vitals, prior health care utilization, and postoperative complications.

“We then grouped our variables of interest into the following categories: preoperative, operative, postoperative but predischarge, and postdischarge,” she explained, noting that logistic models predicting 30-day readmission were constructed by sequentially adding groups into the model. Models were compared by way of adjusted R² and C-statistics.

Assuming postoperative readmissions are preventable suggests that they are linked to the quality of care during the index hospitalization. The current findings demonstrate the challenges in predicting readmissions, and are important given that hospitals with higher-than-expected readmission rates for certain diagnoses and procedures are fined by the Centers for Medicare & Medicaid Services; 54% of hospitals were fined in 2015, she said.

“Readmission is difficult to predict at the time of discharge despite exhaustive statistical modeling with very granular clinical patient-level detail. Preoperative patient factors and postdischarge complications contribute the most to predictive models. Efforts to decrease readmissions should focus on modifiable patient-level factors, transitions of care, and minimizing postoperative complications,” she concluded.

Dr. Morris reported having no disclosures.

The complete manuscript of this presentation is anticipated to be published in Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – A novel plasma microRNA assay and prediction model appears to successfully differentiate colorectal neoplasia from other neoplasms and from controls.

The assay includes seven microRNAs that were selected, based on P value, area under the curve (AUC), fold change, and biological plausibility, from among 380 microRNAs screened using microfluidic array technology from a “training” cohort of 60 patients. The training cohort included groups of patients, 10 each, with colorectal cancer, advanced adenoma, breast cancer, pancreatic cancer, and lung cancer – cancers chosen because they frequently develop at similar ages as colon cancer – and 10 controls.

Dr. Carter

A panel of seven “uniquely dysregulated” microRNAs specific for colorectal neoplasia was evaluated using single assays in a “test” cohort of 120 patients. A mathematical model was developed to predict sample identity in a 150-patient blinded “validation” cohort using repeat-subsampling validation of the testing dataset with 1,000 iterations each to assess model detection accuracy, Dr. Jane V. Carter of the University of Louisville (Ky.) explained at the annual meeting of the American Surgical Association.

The area under the curve for test cohort comparisons with the assay was 0.91, 0.79, and 0.98 for comparison No. 1 (comparing any neoplasia vs. controls), comparison No. 2 (comparing colorectal neoplasia with other cancers) and comparison No. 3 (comparing colorectal cancer with colorectal adenomas) respectively, Dr. Carter reported.

“Our prediction model identified blinded sample identity with 69%-77% accuracy in comparison No. 1, 66%-76% accuracy in comparison No. 2, and 86%-90% accuracy in comparison No. 3,” she said, noting that the sensitivity and specificity of the assay compare very well with current clinical standards.

©Gio_tto/Thinkstock.com

Colorectal neoplasms frequently develop in individuals at ages when other common cancers also occur. Current screening methods, including endoscopic and imaging studies and fecal testing have poor patient compliance. Fecal and blood tests lack sensitivity and specificity for the detection of adenomas, limiting their use as screening methods, she said.

But this novel assay, which builds on the earlier work identifying miR-21 as a potential marker for colorectal cancer, provides a useful tool for identifying colorectal neoplasms, she said.

Efforts are underway to confirm the findings in a larger study population. If the findings are confirmed, the assay may have other potential uses such as monitoring therapy by comparing microRNA expression before and after treatment, and also for predicting response to treatment such as following preoperative neoadjuvant chemoradiation, Dr. Carter suggested.

The current findings have significant implications for the development of a noninvasive, reliable, and reproducible screening test for detection of colorectal neoplasia.

“If we can improve early-stage detection, we can improve survival,” she said.

Dr. Carter reported having no relevant disclosures.

The complete manuscript of this presentation is anticipated to be published in the Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – A novel plasma microRNA assay and prediction model appears to successfully differentiate colorectal neoplasia from other neoplasms and from controls.

The assay includes seven microRNAs that were selected, based on P value, area under the curve (AUC), fold change, and biological plausibility, from among 380 microRNAs screened using microfluidic array technology from a “training” cohort of 60 patients. The training cohort included groups of patients, 10 each, with colorectal cancer, advanced adenoma, breast cancer, pancreatic cancer, and lung cancer – cancers chosen because they frequently develop at similar ages as colon cancer – and 10 controls.

Dr. Carter

A panel of seven “uniquely dysregulated” microRNAs specific for colorectal neoplasia was evaluated using single assays in a “test” cohort of 120 patients. A mathematical model was developed to predict sample identity in a 150-patient blinded “validation” cohort using repeat-subsampling validation of the testing dataset with 1,000 iterations each to assess model detection accuracy, Dr. Jane V. Carter of the University of Louisville (Ky.) explained at the annual meeting of the American Surgical Association.

The area under the curve for test cohort comparisons with the assay was 0.91, 0.79, and 0.98 for comparison No. 1 (comparing any neoplasia vs. controls), comparison No. 2 (comparing colorectal neoplasia with other cancers) and comparison No. 3 (comparing colorectal cancer with colorectal adenomas) respectively, Dr. Carter reported.

“Our prediction model identified blinded sample identity with 69%-77% accuracy in comparison No. 1, 66%-76% accuracy in comparison No. 2, and 86%-90% accuracy in comparison No. 3,” she said, noting that the sensitivity and specificity of the assay compare very well with current clinical standards.

©Gio_tto/Thinkstock.com

Colorectal neoplasms frequently develop in individuals at ages when other common cancers also occur. Current screening methods, including endoscopic and imaging studies and fecal testing have poor patient compliance. Fecal and blood tests lack sensitivity and specificity for the detection of adenomas, limiting their use as screening methods, she said.

But this novel assay, which builds on the earlier work identifying miR-21 as a potential marker for colorectal cancer, provides a useful tool for identifying colorectal neoplasms, she said.

Efforts are underway to confirm the findings in a larger study population. If the findings are confirmed, the assay may have other potential uses such as monitoring therapy by comparing microRNA expression before and after treatment, and also for predicting response to treatment such as following preoperative neoadjuvant chemoradiation, Dr. Carter suggested.

The current findings have significant implications for the development of a noninvasive, reliable, and reproducible screening test for detection of colorectal neoplasia.

“If we can improve early-stage detection, we can improve survival,” she said.

Dr. Carter reported having no relevant disclosures.

The complete manuscript of this presentation is anticipated to be published in the Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – A novel plasma microRNA assay and prediction model appears to successfully differentiate colorectal neoplasia from other neoplasms and from controls.

The assay includes seven microRNAs that were selected, based on P value, area under the curve (AUC), fold change, and biological plausibility, from among 380 microRNAs screened using microfluidic array technology from a “training” cohort of 60 patients. The training cohort included groups of patients, 10 each, with colorectal cancer, advanced adenoma, breast cancer, pancreatic cancer, and lung cancer – cancers chosen because they frequently develop at similar ages as colon cancer – and 10 controls.

Dr. Carter

A panel of seven “uniquely dysregulated” microRNAs specific for colorectal neoplasia was evaluated using single assays in a “test” cohort of 120 patients. A mathematical model was developed to predict sample identity in a 150-patient blinded “validation” cohort using repeat-subsampling validation of the testing dataset with 1,000 iterations each to assess model detection accuracy, Dr. Jane V. Carter of the University of Louisville (Ky.) explained at the annual meeting of the American Surgical Association.

The area under the curve for test cohort comparisons with the assay was 0.91, 0.79, and 0.98 for comparison No. 1 (comparing any neoplasia vs. controls), comparison No. 2 (comparing colorectal neoplasia with other cancers) and comparison No. 3 (comparing colorectal cancer with colorectal adenomas) respectively, Dr. Carter reported.

“Our prediction model identified blinded sample identity with 69%-77% accuracy in comparison No. 1, 66%-76% accuracy in comparison No. 2, and 86%-90% accuracy in comparison No. 3,” she said, noting that the sensitivity and specificity of the assay compare very well with current clinical standards.

©Gio_tto/Thinkstock.com

Colorectal neoplasms frequently develop in individuals at ages when other common cancers also occur. Current screening methods, including endoscopic and imaging studies and fecal testing have poor patient compliance. Fecal and blood tests lack sensitivity and specificity for the detection of adenomas, limiting their use as screening methods, she said.

But this novel assay, which builds on the earlier work identifying miR-21 as a potential marker for colorectal cancer, provides a useful tool for identifying colorectal neoplasms, she said.

Efforts are underway to confirm the findings in a larger study population. If the findings are confirmed, the assay may have other potential uses such as monitoring therapy by comparing microRNA expression before and after treatment, and also for predicting response to treatment such as following preoperative neoadjuvant chemoradiation, Dr. Carter suggested.

The current findings have significant implications for the development of a noninvasive, reliable, and reproducible screening test for detection of colorectal neoplasia.

“If we can improve early-stage detection, we can improve survival,” she said.

Dr. Carter reported having no relevant disclosures.

The complete manuscript of this presentation is anticipated to be published in the Annals of Surgery pending editorial review.

sworcester@frontlinemedcom.com

CHICAGO – Observation, compared with elective resection, was associated with significantly increased recurrence rates in a single-center randomized, controlled trial of patients who had successfully recovered via nonoperative management from their first episode of acute sigmoid diverticulitis with extraluminal air/abscess.

Recurrence rates in 111 patients randomized to observation or elective resection were 31% in the observation group and 7% in the resection group, at 15 and 18 months, respectively, Dr. Ryan Bendl of State University of New York, Stony Brook reported at the annual meeting of the American Surgical Association.

Patients in the two groups were comparable with respect to age, sex, body mass index, Colorectal Physiologic and Operative Severity Score for the Enumeration of Mortality and Morbidity (CR-POSSUM), and comorbidities, he noted.

Subjects included in the single-center study were adults admitted for a first episode of acute diverticulitis with abscess or extraluminal air who were managed nonoperatively with intravenous antibiotics, a period of nothing by mouth, drainage, and total parenteral nutrition followed by colonoscopy. They were randomized 3:1 to observation or resection, and 68% of the elective resection patients underwent minimally invasive surgery. The study’s primary endpoint was recurrent diverticulitis defined as an acute episode confirmed by computed tomography and requiring hospitalization with intravenous antibiotics.

Diverticulitis accounted for more than 300,000 hospital admissions in 2010 in the United States alone, and 10%-20% of patients had abscess formation. At one time, most patients were managed with immediate operative intervention, but medical and radiologic advances have led to a shift toward nonoperative management, Dr. Bendl said.

Some prior studies have suggested that recurrence rates are higher with nonoperative management, and the current study supports those data.

However, despite the significant increase in the recurrence rate with observation vs. resection, most patients in the observation group did not experience recurrence, and of those who did, none had peritonitis.

“All those with recurrences were successfully treated again using nonoperative management,” he said.

This study was supported in part by grants from Merck and Covidien. Dr. Bendl reported having no relevant financial disclosures.

CHICAGO – Observation, compared with elective resection, was associated with significantly increased recurrence rates in a single-center randomized, controlled trial of patients who had successfully recovered via nonoperative management from their first episode of acute sigmoid diverticulitis with extraluminal air/abscess.

Recurrence rates in 111 patients randomized to observation or elective resection were 31% in the observation group and 7% in the resection group, at 15 and 18 months, respectively, Dr. Ryan Bendl of State University of New York, Stony Brook reported at the annual meeting of the American Surgical Association.

Patients in the two groups were comparable with respect to age, sex, body mass index, Colorectal Physiologic and Operative Severity Score for the Enumeration of Mortality and Morbidity (CR-POSSUM), and comorbidities, he noted.

Subjects included in the single-center study were adults admitted for a first episode of acute diverticulitis with abscess or extraluminal air who were managed nonoperatively with intravenous antibiotics, a period of nothing by mouth, drainage, and total parenteral nutrition followed by colonoscopy. They were randomized 3:1 to observation or resection, and 68% of the elective resection patients underwent minimally invasive surgery. The study’s primary endpoint was recurrent diverticulitis defined as an acute episode confirmed by computed tomography and requiring hospitalization with intravenous antibiotics.

Diverticulitis accounted for more than 300,000 hospital admissions in 2010 in the United States alone, and 10%-20% of patients had abscess formation. At one time, most patients were managed with immediate operative intervention, but medical and radiologic advances have led to a shift toward nonoperative management, Dr. Bendl said.

Some prior studies have suggested that recurrence rates are higher with nonoperative management, and the current study supports those data.

However, despite the significant increase in the recurrence rate with observation vs. resection, most patients in the observation group did not experience recurrence, and of those who did, none had peritonitis.

“All those with recurrences were successfully treated again using nonoperative management,” he said.

This study was supported in part by grants from Merck and Covidien. Dr. Bendl reported having no relevant financial disclosures.

CHICAGO – Observation, compared with elective resection, was associated with significantly increased recurrence rates in a single-center randomized, controlled trial of patients who had successfully recovered via nonoperative management from their first episode of acute sigmoid diverticulitis with extraluminal air/abscess.

Recurrence rates in 111 patients randomized to observation or elective resection were 31% in the observation group and 7% in the resection group, at 15 and 18 months, respectively, Dr. Ryan Bendl of State University of New York, Stony Brook reported at the annual meeting of the American Surgical Association.

Patients in the two groups were comparable with respect to age, sex, body mass index, Colorectal Physiologic and Operative Severity Score for the Enumeration of Mortality and Morbidity (CR-POSSUM), and comorbidities, he noted.

Subjects included in the single-center study were adults admitted for a first episode of acute diverticulitis with abscess or extraluminal air who were managed nonoperatively with intravenous antibiotics, a period of nothing by mouth, drainage, and total parenteral nutrition followed by colonoscopy. They were randomized 3:1 to observation or resection, and 68% of the elective resection patients underwent minimally invasive surgery. The study’s primary endpoint was recurrent diverticulitis defined as an acute episode confirmed by computed tomography and requiring hospitalization with intravenous antibiotics.

Diverticulitis accounted for more than 300,000 hospital admissions in 2010 in the United States alone, and 10%-20% of patients had abscess formation. At one time, most patients were managed with immediate operative intervention, but medical and radiologic advances have led to a shift toward nonoperative management, Dr. Bendl said.

Some prior studies have suggested that recurrence rates are higher with nonoperative management, and the current study supports those data.

However, despite the significant increase in the recurrence rate with observation vs. resection, most patients in the observation group did not experience recurrence, and of those who did, none had peritonitis.

“All those with recurrences were successfully treated again using nonoperative management,” he said.

This study was supported in part by grants from Merck and Covidien. Dr. Bendl reported having no relevant financial disclosures.