PANG Li-bo1, YE Hui-yi2, CAI Zu-long2, ZHAO Ru-fan1, CUI Jun-kai1, DING Wei1
. Department of Radiology, Benxi Central Hospital, the Ninth Clinical College, Benxi Liaoning 117000, China;2. Departmet of Radiology, 301 Hospital, Beijing 100853, China
Abstract：Objective: To investigate the MRI manifestations and diagnostic value in patients with hepatobiliary cystadenoma. Methods: Three cases were proved by pathology to be hepatobiliary cystadenoma after surgical resection, 2 cases had portion of carcinoma. Three cases were all female, age ranged from 39 to 72 years old, mean age was 52. Conventional scan sequences were GRE-T1WI and fat saturation sequence T2WI of transaxial, MRCP was performed in 1 case, dynamic contrast enhanced scan, 3D LAVA or FAME with three phase and delay phase were performed in all. Results: MR demonstrated capsule wall and papillary solid lesions in one case with cystic and solid lesions of hepatobiliary cystadenoma. Poly cystic form structure of different size in one case, capsule wall and septation was thick, part of capsule wall was obviously thickened and nodus form, intrahepatic bile duct was dilated, large poly-antrum cystic form structure in one case, capsule wall and septation were smooth, part of capsule wall was uniformly thicken, capsule wall, septation, mural nodus form and solid lesions in three cases were all slightly hyperintense on T2WI and slightly hypointense on T1WI, part of cyst fluid was hyperintense on T2WI, the diameter of tumor ranged from 3.4cm to 13.5cm. Part of capsule wall, septation, solid lesions and mural nodus were obviously enhanced in arterial phase in three cases, the extent of enhancement showed a little degrade in port vein phase, balance phase and delay phase, but dense to liver parenchyma at synchronization. MRCP demonstrated that the branch of left intrahepatic bile duct enter the tumor of cystic and solid lesions in one case. Conclusion: MR may obviously demonstrate the entire image of hepatobiliary cystadenoma, the mural nodus form and corpora mammillaria solid lesions suggest canceration. Conventional MR sequences combine with dynamic enhancement and MRCP possess fairly diagnostic value to hepatobiliary cystadenoma.
2007, Vol. 18 
