肝良恶性占位性病变在CT平扫片上的共性表现均为肝内低密度灶，单凭平扫片将其鉴别很有困难，如原发性肝癌与肝血管瘤，尽管作增强，若扫描方法不当有的病例也很难作出准确诊断。临床资料一、一般资料1．CT平扫片肝内显示低密度灶者40例。2．造影剂：60％安其格纳芬100ml。3． Common benign and malignant lesions in the CT scan on the common manifestations of low-density intrahepatic lesions are simple to distinguish it by plain scan very difficult, such as primary liver cancer and hepatic hemangioma, although for enhanced, if Some cases of inappropriate scanning method is also difficult to make an accurate diagnosis. Clinical data First, the general information 1. 40 cases of CT scan showed low-density intrahepatic lesions. 2. Contrast agent: 60% Anqi Genafen 100ml. 3.