title: A case of distal bile duct cancer with extensive intraepithelial spread diagnosed preoperatively by peroral cholangioscopy combined with narrow band imaging.
abstract: A 75-year-old woman with jaundice was given a diagnosis of bile duct cancer using several imaging modalities. The proximal and middle bile ducts were evaluated as normal by multidetector-row CT and intraductal ultrasonography. However, peroral cholangioscopy (POCS) with narrow band imaging (NBI) clearly revealed the intraepithelial extent of the bile duct cancer from the distal bile duct to the hilar bile duct, which was confirmed by histological examination of the resected specimen. POCS combined with NBI is expected to be useful for determining the resection margin in bile duct cancer cases.
authors.affiliation: Department of Gastroenterology, Sendai City Medical Center. t-ogawa@openhp.or.jp
authors.forename: Takahisa
authors.initials: T
authors.lastname: Ogawa
authors.forename: Jun
authors.initials: J
authors.lastname: Horaguchi
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Noda
authors.forename: Go
authors.initials: G
authors.lastname: Kobayashi
authors.forename: Kei
authors.initials: K
authors.lastname: Ito
authors.forename: Takashi
authors.initials: T
authors.lastname: Obana
authors.forename: Osamu
authors.initials: O
authors.lastname: Takasawa
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Koshita
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Kanno
authors.forename: Naotaka
authors.initials: N
authors.lastname: Fujita
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000000981:diagnostic imaging*; D000368:Aged; D001650:Bile Duct Neoplasms / Q000000981:diagnostic imaging*; D002758:Cholangiography / Q000379:methods*; D005260:Female; D006801:Humans