PMID- 15330900 OWN - NLM STAT- MEDLINE DCOM- 20041007 LR - 20071114 IS - 0002-9270 (Print) IS - 0002-9270 (Linking) VI - 99 IP - 9 DP - 2004 Sep TI - A comparison of routine cytology and fluorescence in situ hybridization for the detection of malignant bile duct strictures. PG - 1675-81 AB - BACKGROUND AND AIM: The aim of this study was to assess the relative sensitivities and specificities of fluorescence in situ hybridization (FISH) and routine cytology for the detection of malignancy in biliary tract strictures. METHODS: Bile duct brushing and aspirate specimens were collected from 131 patients being evaluated for possible malignant bile duct strictures. Both specimen types were assessed by FISH but only brushing specimens were assessed by cytology. The FISH assay used a mixture of fluorescently-labeled probes to the centromeres of chromosomes 3, 7, and 17 and chromosomal band 9p21 (Vysis UroVysion) to identify cells having chromosomal abnormalities. A case was considered positive for malignancy if five or more cells exhibited polysomy. RESULTS: Sixty-six of the 131 patients had surgical pathologic and/or clinical evidence of malignancy. Thirty-nine patients had cholangiocarcinoma, 19 had pancreatic carcinoma, and 8 had other types of malignancy. The sensitivity of cytology and FISH for the detection of malignancy in bile duct brushing specimens in these patients was 15% and 34% (p < 0.01), respectively. The sensitivity of FISH for the bile aspirate specimens was 23%, and the combined sensitivity of FISH for aspirate and brushing specimens was 35%. The specificity of FISH and cytology brushings were 91% and 98% (p= 0.06), respectively. CONCLUSIONS: FISH is significantly more sensitive than and nearly as specific as conventional cytology for the detection of malignant biliary strictures in biliary brushing specimens. FISH may improve the clinical management of patients who are being evaluated for malignancy in bile duct strictures. FAU - Kipp, Benjamin R AU - Kipp BR AD - Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA. FAU - Stadheim, Linda M AU - Stadheim LM FAU - Halling, Shari A AU - Halling SA FAU - Pochron, Nicole L AU - Pochron NL FAU - Harmsen, Scott AU - Harmsen S FAU - Nagorney, David M AU - Nagorney DM FAU - Sebo, Thomas J AU - Sebo TJ FAU - Therneau, Terry M AU - Therneau TM FAU - Gores, Gregory J AU - Gores GJ FAU - de Groen, Piet C AU - de Groen PC FAU - Baron, Todd H AU - Baron TH FAU - Levy, Michael J AU - Levy MJ FAU - Halling, Kevin C AU - Halling KC FAU - Roberts, Lewis R AU - Roberts LR LA - eng GR - CA 100882/CA/NCI NIH HHS/United States GR - CA 82862/CA/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Gastroenterol JT - The American journal of gastroenterology JID - 0421030 SB - IM CIN - Am J Gastroenterol. 2004 Sep;99(9):1682-3. PMID: 15330901 MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Bile Duct Neoplasms/diagnosis/*pathology MH - Bile Ducts/*pathology MH - Biopsy, Needle MH - Cholangiopancreatography, Endoscopic Retrograde MH - Cohort Studies MH - Cytodiagnosis/methods MH - Diagnostic Tests, Routine MH - Female MH - Humans MH - Immunohistochemistry MH - *In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Pancreatic Ducts/*pathology MH - Probability MH - Prospective Studies MH - Sensitivity and Specificity EDAT- 2004/08/28 05:00 MHDA- 2004/10/08 09:00 CRDT- 2004/08/28 05:00 PHST- 2004/08/28 05:00 [pubmed] PHST- 2004/10/08 09:00 [medline] PHST- 2004/08/28 05:00 [entrez] AID - AJG30281 [pii] AID - 10.1111/j.1572-0241.2004.30281.x [doi] PST - ppublish SO - Am J Gastroenterol. 2004 Sep;99(9):1675-81. doi: 10.1111/j.1572-0241.2004.30281.x.