Causes of portal hypertension can be prehepatic (such as portal vein thrombosis), hepatic (commonly liver cirrhosis and hepatic fibrosis) or posthepatic (such as hepatic vein obstruction).

A developmental venous anomaly (DVA) is a problem with the way small veins are arranged. They may look like the spokes of a wheel. The veins drain into a larger central vein. DVAs are not cancer ...