Diagnostic value of intraductal ultrasonography for biliary stricture

VernacularTitle:胆管腔内超声对鉴别胆管狭窄性质的临床价值研究
Author: Yunhong LI ; Xiaoping ZOU ; Yuling WU ; Yuling YAO ; Mingdong LIU ; Yaowei AI ; Zhaomin XU
Publication Type:Journal Article
Keywords: Endosonography; Biliary stricture; Diagnosis,differential
From: Chinese Journal of Digestive Endoscopy 2012;23(1):11-14
CountryChina
Language:Chinese
Abstract: Objective To investigate the diagnostic value of intraductal ultrasonography for the quality of biliary stricture.Methods Data of the patients who had received operation because of biliary stricture after IDUS examination from 2006 to 2010 were collected.IDUS results were compared with those of operation.Results There were 43 cases of malignant strictures and 6 benign strictures in total.The sensitivity,specificity,positive predictive value,negative predictive value and diagnostic accuracy of intraductal uhrasonography for the quality of biliary stricture were 97.7％ ( 42/43 ),83.3％ ( 5/6 ),97.7％ ( 42/43 ),83.3％ (5/6) and 95.9％ (47/49),respectively,which were significantly higher than conventional imaging like ultrasound B,CT and MRCP.Twenty one cases in 32 were diagnosed as malignant biliary stricture with cytological brushing,with the diagnostic accuracy of 65.6％.All cases had been diagnosed by IDUS.Conclusion Intraductal ultrasonography is of high diagnostic value for biliary stricture.However,cytological brushing based on IDUS is of limited diagnostic value for malignant biliary stricture.