Figure 4. A 65-year-old man with hepatocellular carcinoma complicated with portal vein tumor thrombus in the left branch.

Enhanced computed tomography showed the thrombus originated from the left branch of the portal vein. The image prior to iodine seed implantation showed the spatial distribution of seeds according to the treatment planning system. Computed tomography demonstrated that the portal vein tumor thrombus decreased in size and that the portal vein was recanalized two months after seed implantation.