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Primary Sclerosing Cholangitis Patients With Serial Polysomy Fluorescence In Situ Hybridization Results Are at Increased Risk of Cholangiocarcinoma
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Primary Sclerosing Cholangitis Patients With Serial Polysomy Fluorescence In Situ Hybridization Results Are at Increased Risk of Cholangiocarcinoma
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Journal Article
Primary Sclerosing Cholangitis Patients With Serial Polysomy Fluorescence In Situ Hybridization Results Are at Increased Risk of Cholangiocarcinoma
2011
Overview
A polysomy fluorescence in situ hybridization (FISH) result in a pancreatobiliary brushing from a patient with primary sclerosing cholangitis (PSC) is very worrisome for carcinoma. However, treatment is not recommended unless verified by corroborative evidence of malignancy because of less than perfect test specificity in this population. The aim of this study was to evaluate the clinical outcome of PSC patients with serial polysomy FISH results.
Patients with PSC underwent endoscopic retrograde cholangiopancreatography with brushings when clinically indicated per standard practice. Brushings were evaluated by routine cytology and FISH. Retrospective review identified patients with a polysomy FISH result without definitive imaging or pathological evidence of malignancy at the time of the first polysomy, who underwent follow-up examinations including subsequent FISH testing (n=30). Patient records were reviewed to determine clinical outcome.
In all, 9 of 13 patients (69%) with a subsequent polysomy result (i.e., serial polysomy) were diagnosed with cholangiocarcinoma (CCA) compared with 3 of 17 patients (18%) with subsequent non-polysomy results (P=0.008). There was a significant difference in time to a diagnosis of CCA between PSC patients with serial polysomy compared with those with subsequent non-polysomy (P=0.01). In four patients with serial polysomy results, imaging/pathological evidence of CCA was not found until 1-2.7 years after the initial polysomy FISH result.
FISH may detect polysomic cells in pancreatobiliary brushings before other pathological or imaging techniques identify CCA. Patients with serial polysomy FISH results are at higher risk for having CCA than those with subsequent non-polysomy FISH results.
Publisher
Nature Publishing Group,Wolters Kluwer Health Medical Research, Lippincott Williams & Wilkins
Subject
/ Aged
/ Bile Duct Neoplasms - diagnosis
/ Bile Duct Neoplasms - pathology
/ Bile Ducts, Intrahepatic - pathology
/ Biological and medical sciences
/ Cholangiocarcinoma - diagnosis
/ Cholangiocarcinoma - pathology
/ Cholangiopancreatography, Endoscopic Retrograde
/ Cholangitis, Sclerosing - genetics
/ Cholangitis, Sclerosing - pathology
/ Female
/ Gastroenterology. Liver. Pancreas. Abdomen
/ Humans
/ In Situ Hybridization, Fluorescence
/ Liver. Biliary tract. Portal circulation. Exocrine pancreas
/ Male
/ Precancerous Conditions - genetics
/ Precancerous Conditions - pathology
/ Tumors
