title: Relationship between right portal and biliary systems based on reclassification of the liver.
abstract: BACKGROUND
  Although the anatomy of the right portal and biliary systems and their interrelationships must be understood to safely and satisfactorily perform left-sided resection of hilar cholangiocarcinoma or right-lobe living donor liver transplantation, the anatomies of the right portal and biliary systems are extremely difficult to understand.
  
  
  METHODS
  A total of 60 patients with normal liver underwent computed tomography during both portography and cholangiography to evaluate relationships between the right biliary and portal systems based on reclassification of the liver to divide the right liver into 3 segments.
  
  
  RESULTS
  All ventral and posterior ducts constantly join medially to the anterior portal trunk. In contrast, some dorsal ducts join the ventral duct medially and others join the posterior duct lateral to the anterior trunk.
  
  
  CONCLUSIONS
  Reclassification of the liver to divide the right liver into 3 segments facilitates an understanding of relationships between the right portal and biliary systems.
authors.affiliation: Department of Surgery, Chiba Cancer Center Hospital, 666-2 Nitonachou, Chuouku, Chiba 260-8717, Japan. acho@chiba-cc.jp
authors.forename: Akihiro
authors.initials: A
authors.lastname: Cho
authors.forename: Takehide
authors.initials: T
authors.lastname: Asano
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yamamoto
authors.forename: Matsuo
authors.initials: M
authors.lastname: Nagata
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Takiguchi
authors.forename: Osamu
authors.initials: O
authors.lastname: Kainuma
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Soda
authors.forename: Mikito
authors.initials: M
authors.lastname: Mori
authors.forename: Souichi
authors.initials: S
authors.lastname: Narumoto
authors.forename: Shinichi
authors.initials: S
authors.lastname: Okazumi
authors.forename: Harufumi
authors.initials: H
authors.lastname: Makino
authors.forename: Takenori
authors.initials: T
authors.lastname: Ochiai
authors.forename: Munemasa
authors.initials: M
authors.lastname: Ryu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001659:Biliary Tract / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D018281:Cholangiocarcinoma / Q000000981:diagnostic imaging / Q000601:surgery; D002758:Cholangiography; D006801:Humans; D041781:Jaundice, Obstructive / Q000175:diagnosis / Q000628:therapy; D008099:Liver / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery; D008875:Middle Aged; D011168:Portal System / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D011172:Portography; D012016:Reference Values; D014057:Tomography, X-Ray Computed