title: Type I biliary atresia without extrahepatic biliary cyst.
abstract: Currently, magnetic resonance cholangiography (MRC) is used for the differentiation of biliary atresia (BA) from other causes of infantile cholestasis. The authors present a case of type I BA without an extrahepatic biliary cyst in a 2-month-old girl. MRC clearly visualized the patency of the gallbladder, cystic duct, and hepatic ducts with disappearance of the common bile duct. Intraoperative cholangiography demonstrated a cloudy appearance of the intrahepatic bile ducts, confirming the diagnosis of type I BA. We believe that this is the first reported case of type I BA without an extrahepatic biliary cyst diagnosed by MRC.
authors.affiliation: Department of Paediatric Surgery, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan. hiro-kom@md.tsukuba.ac.jp
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Komuro
authors.forename: Toyoichiro
authors.initials: T
authors.lastname: Kudo
authors.forename: Takahiro
authors.initials: T
authors.lastname: Jinbo
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Hori
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Tatekawa
authors.forename: Sumi
authors.initials: S
authors.lastname: Kudou
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Urita
authors.forename: Michio
authors.initials: M
authors.lastname: Kaneko
mesh_terms: D017734:Bile Ducts, Extrahepatic / Q000473:pathology*; D001656:Biliary Atresia / Q000150:complications* / Q000175:diagnosis*; D049448:Cholangiopancreatography, Magnetic Resonance; D003560:Cysts / Q000150:complications* / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007223:Infant