Fig. 1

Abdominal computed tomography revealing a huge hepatocellular carcinoma located at segment 4 (white arrow). The portal vein tumor thrombus has spread from the adjacent portal vein to the left portal trunk, main portal trunk, through to the contralateral right portal trunk (arrowhead). The tip of the portal vein tumor thrombus has invaded into the bifurcation of the anterior and posterior branches; the anterior branch is filled with tumor thrombus, while the posterior branch is filled with tumors or blood thrombi