BACKGROUND: Mean portal vein diameter is considered as the best indicator for portal hypertension. However, the cutoff point differs from study to study (above 10-15 mm) despite the existence of normal mean portal vein ...

Portal hypertension occurs when the portal venous pressure exceeds 15mm Hg.. Liver cirrhosis, whatever the primary cause, is the commonest cause of portal hypertension. Because of its accessibility, lack of ionizing radiation ...