title: A case of early cancer in cystic intrahepatic duct associated with congenital choledochal cyst.
abstract: Herein, we report an extremely rare case of early cancer localized in the cystic intrahepatic duct, which is associated with the choledochal cyst including both the intra- and extrahepatic duct (type IV-A cyst). A small polypoid lesion in the cyst was detected by computed tomography. Extensive resection of the choledochal cyst with lobectomy was performed on the tumor in a 23-year-old woman. Tubular adenocarcinoma localized in the wall of the cystic left hepatic duct was histologically confirmed. Awareness of the diagnostic and treatment modalities, with a focus on potential malignancy in the cystic intrahepatic duct, in cases with anomalous arrangement of the pancreatobiliary duct is necessary.
authors.affiliation: First Department of Surgery, Kumamoto University School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kawamoto
authors.forename: T
authors.initials: T
authors.lastname: Hiraoka
authors.forename: S
authors.initials: S
authors.lastname: Maruta
authors.forename: E
authors.initials: E
authors.lastname: Watanabe
authors.forename: K
authors.initials: K
authors.lastname: Kanemitsu
authors.forename: T
authors.initials: T
authors.lastname: Tsuji
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D000328:Adult; D001650:Bile Duct Neoplasms / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D001653:Bile Ducts, Intrahepatic; D018281:Cholangiocarcinoma / Q000150:complications* / Q000453:epidemiology / Q000601:surgery; D015529:Choledochal Cyst / Q000150:complications*; D003549:Cystic Duct; D005260:Female; D006801:Humans