title: [Diagnostic usefulness of magnetic resonance cholangiopancreatography (MRCP) in comparison with retrograde cholangiopancreatography (ERCP) for cholelithiasis].
abstract: OBJECTIVE
  To elucidate MRCP diagnostic usefulness compared to ERCP.
  
  
  METHODS
  29 MRCP performed patients diagnosed by ERCP were studied.
  
  
  RESULTS
  MRCP showed 92%, 67% sensitivity and 73%, 100% specificity in choledocholithiasis (CBD) and cholecystolithiasis (GB), respectively. MRCP revealed 4.0 false positive and 1.5 false negative in CBD and GB, respectively. MRCP could detect 22 stones out of 33 in CBD and 13 out of 42 in GB. As for the maximal diameter, MRCP depicted 31% for less than 5 mm and 100% for over 6 mm in CBD. In GB, 7% for less than 5 mm, 83% for 6-10 mm and 100% for over 11 mm.
  
  
  CONCLUSIONS
  Although the depection of tiny stone is limited, MRCP is a useful diagnostic tool for cholelithiasis, especially choledocholithiasis.
authors.affiliation: Department of Internal Medicine, Nara Prefectural Gojo Hospital.
authors.forename: T
authors.initials: T
authors.lastname: Ahn
authors.forename: M
authors.initials: M
authors.lastname: Matsumoto
authors.forename: S
authors.initials: S
authors.lastname: Ueda
authors.forename: H
authors.initials: H
authors.lastname: Fukui
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002760:Cholangiopancreatography, Endoscopic Retrograde; D002769:Cholelithiasis / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D042882:Gallstones / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity