title: Resection of hepaticocystic duct which is a rare anomaly of the extrahepatic biliary system: a case report.
abstract: BACKGROUND
  There are several variations in the morphologic characteristics of the extrahepatic biliary system. A hepaticocystic duct is one of the rare variations.
  
  
  METHODS
  A 69-year-old Asian man underwent a cholecystectomy for cholelithiasis. His cystic duct was not detected during surgery. An intraoperative cholangiography revealed that his common hepatic ducts drained directly into the neck of his gallbladder. There was no common bile duct, as evidenced by the union of the common hepatic and cystic ducts.
  
  
  CONCLUSIONS
  Knowledge of anomalies related to the extrahepatic biliary system is important for decreasing the severe morbidity and mortality that may result from a failure to recognize the anomaly.
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Harada
authors.affiliation: Hepatobiliary Pancreatic Surgery Division and Artificial Organ and Transplantation Division, Department of Surgery, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. yasusuga-tky@umin.ac.jp.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Sugawara
authors.forename: Takeaki
authors.initials: T
authors.lastname: Ishizawa
authors.forename: Junichi
authors.initials: J
authors.lastname: Kaneko
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: Taku
authors.initials: T
authors.lastname: Aoki
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Hasegawa
authors.forename: Norihiro
authors.initials: N
authors.lastname: Kokudo