title: Giant biliary cystadenoma complicated with polycystic liver: a case report.
abstract: Biliary cystadenoma (BCA) is a rare hepatic neoplasm. Although considered a benign cystic tumor of the liver, BCA has a high risk of recurrence with incomplete excision and a potential risk for malignant degeneration. Correct diagnosis and complete tumor excision with negative margins are the mainstay of treatment. Unfortunately, due to the lack of presenting symptoms, and normal laboratory results in most patients, BCA is hard to distinguish from other cystic lesions of the liver such as biliary cystadenocarcinoma, hepatic cyst, hydatid cyst, Caroli disease, undifferentiated sarcoma, intraductal papillary mucinous tumor, and hepatocellular carcinoma. Ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) may be necessary. They demonstrate intrahepatic cystic lesions with features such as mural nodules, varying wall thickness, papillary projections, and internal septations. Nevertheless, surgery is still the only means of accurate diagnosis. Definitive diagnosis requires histological examination following formal resection. We describe a 57-year-old woman initially diagnosed with polycystic liver who was subsequently diagnosed with giant intrahepatic BCA in the left hepatic lobe. This indicates that both US physicians and hepatobiliary specialists should attach importance to hepatic cysts, and CT or MRI should be performed for further examination when a diagnosis of BCA is suspected.
authors.affiliation: Zhen-Zhen Yang, Yong Li, Jun Liu, Kuang-Fan Li, Ye-Hong Yan, Wei-Dong Xiao, Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China.
authors.forename: Zhen-Zhen
authors.initials: ZZ
authors.lastname: Yang
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Kuang-Fan
authors.initials: KF
authors.lastname: Li
authors.forename: Ye-Hong
authors.initials: YH
authors.lastname: Yan
authors.forename: Wei-Dong
authors.initials: WD
authors.lastname: Xiao
mesh_terms: D001706:Biopsy; D002763:Cholecystectomy; D003537:Cystadenoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D003560:Cysts / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D003951:Diagnostic Errors / Q000517:prevention & control; D005260:Female; D006498:Hepatectomy; D006801:Humans; D008107:Liver Diseases / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008113:Liver Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D011237:Predictive Value of Tests; D014057:Tomography, X-Ray Computed
keywords: Biliary cystadenoma; Diagnosis; Hepatic cysts; Ultrasound