title: Biliary cystadenocarcinoma followed up as benign cystadenoma for 10 years.
abstract: We describe a case of biliary cystadenocarcinoma that showed a longterm clinical course. A 69-year-old Japanese man was admitted to our hospital because of abdominal discomfort. The patient had been diagnosed with benign cystadenoma of the liver at another hospital in 1987 and had been followed up for 10 years. Abdominal ultrasonography (US) and computed tomography (CT) scan demonstrated a unilocular cystic lesion, which included multiple conspicuous papillary protrusions in the left hepatic lobe. Left lateral segmentectomy was performed, and intraoperative cholangiography revealed a communication between the cystic tumor and intrahepatic bile duct. The tumor contained clear mucinous fluid and enfolded multiple yellowish papillary projections on the cystic wall. Histological examination showed the tumor to be biliary cystadenocarcinoma. The patient is doing well 4 years after the operation.
authors.affiliation: Internal Medicine, Nagoya Midori Municipal Hospital, 1-77 Shiomigaoka, Midori-ku, Nagoya 458-0037, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Kubota
authors.forename: Kohei
authors.initials: K
authors.lastname: Katsumi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Iida
authors.forename: Akihiko
authors.initials: A
authors.lastname: Kishimoto
authors.forename: Yoshimitsu
authors.initials: Y
authors.lastname: Ban
authors.forename: Koutaroh
authors.initials: K
authors.lastname: Nakata
authors.forename: Nobuo
authors.initials: N
authors.lastname: Takahashi
authors.forename: Kunio
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Kenji
authors.initials: K
authors.lastname: Andoh
authors.forename: Shinichi
authors.initials: S
authors.lastname: Takamatsu
authors.forename: Takashi
authors.initials: T
authors.lastname: Joh
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D000368:Aged; D001650:Bile Duct Neoplasms / Q000175:diagnosis* / Q000601:surgery; D003536:Cystadenocarcinoma / Q000175:diagnosis* / Q000601:surgery; D003537:Cystadenoma / Q000175:diagnosis* / Q000601:surgery; D003951:Diagnostic Errors; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006500:Hepatic Duct, Common / Q000000981:diagnostic imaging; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography