肝内周围型胆管细胞癌的CT诊断

目的:探讨肝内周围型胆管细胞癌(IHPCC)的CT特征,加深对IHPCC的认识。方法:回顾性分析经手术和病理证实的12例IHPCC的CT表现。结果:CT平扫12例均为类圆形或不规则形低密度灶,边界不清;病灶周围肝内胆管扩张5例;局部肝包膜回缩征象4例;增强扫描:动脉期与静脉期病灶无强化或轻度强化,延迟后病灶内部呈片状、分隔状或均匀强化。结论:IHPCC的CT表现有一定的特征性,对于与肝内其它常见病变的鉴别诊断具有重要价值。

CT diagnosis of intrahepatic peripheral cholangiocarcinoma

Objective:To study the CT features of intrahepatic peripheral cholangiocarcinoma(IHPCC),and to improve the knowledge of IHPCC.Methods:The CT features of 12 cases of surgically and pathologically confirmed IHPCC were retrospectively reviewed.Results:On the plain CT scans,12 cases were of low density with ill-defined border,which showed similar-round or irregular shape;dilatation of the intrahepatic bile ducts around the tumor was seen(5 cases),and capsular retraction sign(4cases).On enhanced scanning,no enhancement or mild enhancement of the lesion in arterial phase and portal-venous phase,and piece-like, separate-like or homogeneous enhancement in the central regions was seen in the delayed imaging.Conclusion:There are some CT characteristic of IHPCC,they are useful for differentiating tumors from other space-occupying lesions in the liver.