肝内胆管错构瘤影像学诊断

Intrahepatic Bile Duct Hamartoma Imaging Diagnosis

目的探讨胆管错构瘤CT及MRI特点,以提高对该病的诊断水平。方法回顾分析经本院证实的胆管错构瘤患者共13例CT及MRI资料,观察病变在CT及MRI图像上的分布、大小、形态及强化特点。结果胆管错构瘤在CT平扫主要表现为肝内低密度的囊性病灶,大小不等,形态各异,边界部分清楚,部分不清楚,增强扫描无明显强化,MRI主要表现为长T1长T2改变(T1WI上病变信号低于肝实质,T2WI病灶显示为明显的高信号),增强扫描病灶未见明显强化,部分病灶出现边缘强化及结节状强化,MRCP成像显示肝内囊性病变与肝内胆管不相通,肝内胆管树分支未见明显异常。结论胆管错构瘤的CT及MRI表现有一定的特征性,有助于对该病的诊断,最终确诊有赖于采用活体组织进行病理学检查。

Objective To discuss CT and MRI findings of multiple hepatic biliary hamartoma in order to improve the umderstanding of this disease.Methods The CT and MRI findings of multiple biliary hamartoma proved by biopsy and pathology in 13 cases were retrospectively analyzed. Then observing the lesions in CT and MRI images on the distribution,size, morphology and enhancement characteristics.Results CT scan showed multiple lesions of hepatic biliary hamartoma were low density,contrast enhanced scan showed no enhancement. Lesions were long signal intensity on T1WI and T2WI, and enhanced scanning had no obvious enhancement, some lesions appeared edge enhancement and nodular enhancement. MRCP showed the multiple intrahepatic cystic high signal which was not connected with visible biliary tree.Conclusion There are certain characteristic in CT and MRI findings, which is helpful in the diagnosis of the disease, the final diagnosis depends on pathological examination was performed by living tissue.