对Ｂ超诊断为门脉癌栓的４０例患者进行ＣＴ扫描，在增强后扫描，门脉内显示出底密度缺损影；门脉主干增宽；腹水及脾肿大；癌灶呈播散性；１９例主癌灶位于肝方叶邻近；仅少数病例出现肝外转移。 A CT scan was performed on 40 patients diagnosed with portal vein tumor embolus by B-ultrasound. In the enhanced scan, there was a bottom-density defect in the portal vein; the portal vein was broadened; ascites and splenomegaly; and the lesions were disseminated. 19 cases of main cancer foci located in the vicinity of the liver; only a few cases showed extrahepatic metastases.