Fig. 1

A Plane CT scan indicates less regular shape of liver, diffuse mass-like and nodular slightly hypodense lesions, some of which were fused. B Contrast-enhanced CT: significant ring enhancement in the arterial phase. C, D Continuous ring enhancement in the venous and delayed phases, local wall thinning and irritability in the right and left branches of the portal vein. Consider malignant tumors, a high possibility of hepatocellular carcinoma or cholangiocarcinoma, with local invasion of the right and left branches of the portal vein, hilar lymphadenopathy, and a small amount of ascites