title: Biliary ductal involvement of hilar cholangiocarcinoma: multidetector computed tomography versus magnetic resonance cholangiography.
abstract: OBJECTIVE
  To compare the diagnostic accuracy of multidetector computed tomography (MDCT) and magnetic resonance cholangiography (MRC) in evaluating the extent of biliary involvement of hilar cholangiocarcinoma.
  
  
  METHODS
  Images of 16-detector MDCT, MRC, and direct cholangiography of 33 patients with pathologically proven hilar cholangiocarcinoma were retrospectively interpreted independently by 2 radiologists according to the Bismuth classification. In the operated 14 patients, the diagnostic accuracies of MDCT and MRC were calculated according to surgical and pathological records. In nonoperated 19 patients, the agreement of MDCT and MRC with direct cholangiography was calculated.
  
  
  RESULTS
  In the operated patients, the diagnostic accuracy of MDCT was 64.3%, and that of MRC was 71.4%, without statistical difference (P = 0.93). In nonoperated patients, the agreement of MDCT with direct cholangiography was 73.7%, and that of MRC was 94.7%, without statistical difference (P = 0.58).
  
  
  CONCLUSIONS
  In evaluating the biliary ductal extension of hilar cholangiocarcinoma, MDCT and MRC showed similar accuracies and agreements.
authors.affiliation: Department of Diagnostic Radiology, Yonsei University College of Medicine, Yongdong Severance Hospital, Seoul, Republic of Korea.
authors.forename: Eun-Suk
authors.initials: ES
authors.lastname: Cho
authors.forename: Mi-Suk
authors.initials: MS
authors.lastname: Park
authors.forename: Jeong-Sik
authors.initials: JS
authors.lastname: Yu
authors.forename: Myeong-Jin
authors.initials: MJ
authors.lastname: Kim
authors.forename: Ki Whang
authors.initials: KW
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001650:Bile Duct Neoplasms / Q000175:diagnosis*; D001653:Bile Ducts, Intrahepatic; D018281:Cholangiocarcinoma / Q000175:diagnosis*; D002758:Cholangiography / Q000379:methods*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed