title: Biliary cystadenocarcinoma diagnosed with real-time contrast-enhanced ultrasonography: report of a case with diagnostic features.
abstract: Biliary cystadenocarcinoma is a very rare malignant cystic tumor of the liver, which is often misdiagnosed due to a poor recognition of it. We report a case of a 60-year-old man with biliary cystadenocarcinoma with his real time contrast enhanced ultrasound (CEUS) characteristics compared to those of computed tomography (CT) and magnetic resonance imaging (MRI), which were correlated with the surgical and pathologic findings. Cystic wall enhancement, internal septations and intra-cystic solid portions in the arterial phase were observed on CEUS after contrast agent injection. The enhancement was washed out progressively and depicted as hypo-enhancement in the portal and late phases. CT revealed a large irregular cystic lesion in the left liver lobe with no clear septations and solid components. MRI showed an irregular cystic occupying lesion with septations.
authors.affiliation: Department of Ultrasonography, General Hospital of Lanzhou Military Area Command, 333 Binhe South Road, Lanzhou 730050, Gansu Province, China. renxiaolong70@hotmail.com
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Ren
authors.forename: Rui-Ling
authors.initials: RL
authors.lastname: Yan
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Yu
authors.forename: Ying
authors.initials: Y
authors.lastname: Zheng
authors.forename: Jun-E
authors.initials: JE
authors.lastname: Liu
authors.forename: Xiao-Bin
authors.initials: XB
authors.lastname: Hou
authors.forename: Si-Yang
authors.initials: SY
authors.lastname: Zuo
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Fu
authors.forename: Hong
authors.initials: H
authors.lastname: Chang
authors.forename: Jian-Hong
authors.initials: JH
authors.lastname: Lu
mesh_terms: D001661:Biliary Tract Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003287:Contrast Media; D003536:Cystadenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006498:Hepatectomy; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010743:Phospholipids; D011237:Predictive Value of Tests; D013459:Sulfur Hexafluoride; D014057:Tomography, X-Ray Computed; D018615:Ultrasonography, Doppler, Color
chemical_list: D003287:Contrast Media; D010743:Phospholipids; C420843:contrast agent BR1; D013459:Sulfur Hexafluoride