Characteristics of MSCT and MRI in the diagnosis of hepatobiliary cystadenocarcinoma / 中华肝胆外科杂志

ABSTRACT

Objective To study the characteristic findings of computer tomography (CT) and magnetic resonance imaging (MRI) in hepatobiliary cystadenocarcinoma.Methods CT,MRI and clinical data were analysed retrospectively.Plain,dynamic CT and MRI were performed in all patients.Results There were 8 patients,7 female,1 male,aged 48-74 years,with a median age of 58.Five lesions were in the left liver,and 3 lesions were in the right liver.One lesion was multilocular cysts with septations.Seven lesions were solitary.The lesions showed low or mixed density on plain CT.Two cysts showed evidence of hemorrhage,while 3 cysts showed fluid levels.There were different signal intensities in the cystic wall nodules which could appear as slightly low intensity on T1WI or slightly high intensities on T2WI.The cyst wall and septations appeared as slightly low intensity on T1WI and T2WI.The cystic fluid signal intensity changed with liquid ingredients.The nodularities showed obviously high signal intensity on DWI,and the fluid showed slightly high signal,while the cystic wall and separations showed slightly low signal intensity.On CT and MRI dynamic enhancement scanning,the nodularities showed obvious enhancement on the arterial phase,while the cystic wall and separations showed no enhancement.The nodularities showed persistent enhancement on the portal venous and delayed phases while the cystic wall and separation showed slight enhancement.Conclusions Hepatobiliary cystadenocarcinoma showed characteristic features on MSCT and MRI.MSCT combined with MR is an important method in the diagnosis and differential diagnosis of hepatobiliary cystadenocarcinoma.