There, the vein splits into the right and left portal vein branches. These enter the main ... Collectively, these veins are called the hepatic portal venous system. If you have chronic liver ...

Portal hypertension is an abnormal increase in blood pressure defined clinically as hepatic venous pressure gradient 5 mmHg in the hepatic portal vein system. Causes of portal hypertension ...

Tumor invades adjacent hepatic parenchyma • T3: Tumor invades unilateral branches of the portal vein or hepatic artery • T4: Tumor invades main portal vein or its branches bilaterally ...