title: Impact of three-dimensional analysis of multidetector row computed tomography cholangioportography in operative planning for hilar cholangiocarcinoma.
abstract: BACKGROUND
  A detailed evaluation of portal triad structures, especially the biliary anatomy at the hepatic hilus, is essential to ensure curative resection for hilar cholangiocarcinoma.
  
  
  METHODS
  Patients underwent 3-dimensional analysis using multidetector row computed tomography cholangioportography preoperatively. The number of bile duct orifices in the cut end of the hilar plate was estimated and compared with the actual number of bile ducts. Furthermore, the estimated length of the surgical margin and its relationship to the pathological margin status was evaluated.
  
  
  RESULTS
  The number of bile duct orifices was correctly estimated in 14 of 19 patients. Of 18 hepatic ducts in which the estimated length of the hepatic side surgical margin was calculated 17 hepatic ducts (94.4%) were diagnosed pathologically as margin negative.
  
  
  CONCLUSIONS
  This investigatory technique has the advantages of precise visualization of anatomic structures and multidirectional assessment of biliary branches and vessels, allowing improved operative planning for the treatment of hilar cholangiocarcinoma.
authors.affiliation: Department of Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Japan. rsasaki@md.tsukuba.ac.jp
authors.forename: Ryoko
authors.initials: R
authors.lastname: Sasaki
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kondo
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Oda
authors.forename: Soichiro
authors.initials: S
authors.lastname: Murata
authors.forename: Go
authors.initials: G
authors.lastname: Wakabayashi
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Ohkohchi
mesh_terms: D000328:Adult; D000368:Aged; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D001653:Bile Ducts, Intrahepatic / Q000000981:diagnostic imaging; D018281:Cholangiocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D005260:Female; D006498:Hepatectomy; D006499:Hepatic Artery / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011300:Preoperative Care