title: Diffusion-weighted MRI in intrahepatic bile duct adenoma arising from the cirrhotic liver.
abstract: A 64-year-old male patient with liver cirrhosis underwent a CT study for hepatocellular carcinoma surveillance, which demonstrated a 1.4-cm hypervascular subcapsular tumor in the liver. On gadoxetic acid-enhanced MRI, the tumor showed brisk arterial enhancement and persistent hyperenhancement in the portal phase, but hypointensity in the hepatobiliary phase. On diffusion-weighted MRI, the tumor showed an apparent diffusion coefficient twofold greater than that of the background liver parenchyma, which suggested that the lesion was benign. The histologic diagnosis was intrahepatic bile duct adenoma with alcoholic liver cirrhosis.
authors.affiliation: Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul 120-752, Korea.
authors.forename: Chansik
authors.initials: C
authors.lastname: An
authors.forename: Sumi
authors.initials: S
authors.lastname: Park
authors.forename: Yoon Jung
authors.initials: YJ
authors.lastname: Choi
mesh_terms: D002759:Adenoma, Bile Duct / Q000175:diagnosis* / Q000209:etiology; D001650:Bile Duct Neoplasms / Q000175:diagnosis* / Q000209:etiology; D001653:Bile Ducts, Intrahepatic; D003287:Contrast Media; D003937:Diagnosis, Differential; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D019786:Gadolinium DTPA; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media; C073590:gadolinium ethoxybenzyl DTPA; D019786:Gadolinium DTPA
keywords: Apparent diffusion coefficient; Bile duct adenoma; Diffusion-weighted imaging; Gadoxetic acid-enhanced MRI; Peribiliary gland hamartoma
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