title: Case report: mucinous cholangiocarcinoma featuring a multicystic appearance and periportal collar in imaging.
abstract: A case of mucinous cholangiocarcinoma (CC), a rare histological type of CC, featuring unusual images is reported. The patient was hospitalized because of acute development of jaundice and fever. Computed tomography demonstrated multiple cystic lesions in the liver and a band-like low density area parallel to the intrahepatic portal vein, a so-called 'periportal collar'. Endoscopic cholangiography revealed a stricture of the hepatic duct with slight upstream dilatation. Cytology of the bile juice and fine-needle aspiration of the cystic lesion in the liver disclosed mucinous carcinoma. The patient died of multiorgan failure 3 weeks after admission. The autopsied liver showed that multiple mucus lakes were lined with adenocarcinoma cells and signet ring cells were floating in the mucus lakes. The cancer cells had spread along the portal tract and invaded into the hepatic parenchyma.
authors.affiliation: Department of Gastroenterology, Asahikawa Kosei General Hospital, Hokkaido, Japan. mizu@asahikawa-med.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Mizukami
authors.forename: H
authors.initials: H
authors.lastname: Ohta
authors.forename: S
authors.initials: S
authors.lastname: Arisato
authors.forename: Y
authors.initials: Y
authors.lastname: Nakano
authors.forename: M
authors.initials: M
authors.lastname: Murakami
authors.forename: Y
authors.initials: Y
authors.lastname: Orii
authors.forename: H
authors.initials: H
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Sakurai
authors.forename: H
authors.initials: H
authors.lastname: Sakurai
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.forename: Y
authors.initials: Y
authors.lastname: Uno
authors.forename: Y
authors.initials: Y
authors.lastname: Nakanuma
authors.forename: M
authors.initials: M
authors.lastname: Ohhira
authors.forename: Y
authors.initials: Y
authors.lastname: Kohgo
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000368:Aged; D001650:Bile Duct Neoplasms / Q000473:pathology*; D001707:Biopsy, Needle; D018281:Cholangiocarcinoma / Q000473:pathology*; D002760:Cholangiopancreatography, Endoscopic Retrograde; D003560:Cysts / Q000473:pathology*; D017809:Fatal Outcome; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed