周围型肝内胆管细胞癌的CT诊断

目的探讨周围型肝内胆管细胞癌的CT特征。方法回顾性分析经手术及病理证实的22例周围型肝内胆管细胞癌的CT表现，并与手术结果对照。结果周围型肝内胆管细胞癌的CT表现为低密度不规则肿块，边界欠清，增强扫描肿瘤边缘实质部分轻中度强化。CT特点为：双期CT增强扫描表现为特征性的从周边到中心的向心性强化；病灶周围肝内胆管轻度扩张；局部肝包膜回缩征象；出现延迟强化；病灶大片坏死，液化较完全。结论肝内胆管细胞癌的CT表现有一定的特征性，对于与肝内其他常见病变的鉴别诊断有重要价值。

Diagnosis of intrahepatic peripheral cholangiocarcinoma with CT

Objective To study the CT features of intrahepatic peripheral cholangiocarcinoma.Methods The CT features of 22 cases of surgically and pathologically confirmed intrahepatic peripheral cholangiocarcinoma were retrospectively reviewed.Results On unenhanced CT,the lesions were of low density with ill defined border.On enhanced scanning,moderate enhancement was observed at the edge of the lesions.Double-stage CT scanning showed characteristic enhancement from the periphery toward the center of the lesions. Focal dilatation of the intrahepatic bile ducts around the tumor was seen and retraction of liver capsuie,delayed enhancement,putrescence patch which was completely liquefied.Conclusion To some extent,the image features of intrahepatic peripheral cholangiocarcinoma are characteristic.They are useful for differentiating tumors from other space occupying lesions in the liver.