Collectively, these veins are called the hepatic portal venous system ... Abnormal connections (portosystemic collaterals) ...

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 ...

or unilateral second-order biliary radicals with contralateral portal vein or hepatic artery involvement The new edition of the American Joint Committee on Cancer staging system now differentiates ...