title: [The diagnostic value of intraductal ultrasonography for complex biliary and pancreatic diseases].
abstract: OBJECTIVE
  To assess the diagnostic value of intraductal ultrasonography (IDUS)when the findings of endoscopic retrograde cholangiopancreatography (ERCP) were not clearly demonstrated.
  
  
  METHODS
  One hundred and thirty-one cases of suspected biliary and pancreatic diseases were enrolled. IDUS was performed after unsatisfactory ERCP. Then the outcomes were correlated with the pathological results.
  
  
  RESULTS
  Sixty-six benign and 58 malignant cases were clarified with additional IDUS after ERCP according to definite diagnostic criteria. The diagnostic accuracy was 94.3% and 95.1%; the sensitivity and specificity were 95.4% and 100%, 80.0% and 76.9%, respectively. Moreover, it could distinguish benign tissues from malignant ones successfully; the sensitivity and specificity were 78.7% and 88.6%.
  
  
  CONCLUSIONS
  IDUS after ERCP yields higher diagnostic accuracy for complex biliary and pancreatic diseases and it is also more dependable in differentiating benign tissues from malignant ones than ERCP alone.
authors: Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
authors: Li
authors: L
authors: Zhao
authors: Shu-Tian
authors: ST
authors: Zhang
authors: Ming
authors: M
authors: Ji
authors: Bing-Qi
authors: BQ
authors: Chen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001649:Bile Duct Diseases / Q000000981:diagnostic imaging*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010182:Pancreatic Diseases / Q000000981:diagnostic imaging*; D018084:Ultrasonography, Interventional