Seventy-one of the 140 shunts and attempted shunts were followed ... is probably attributable to the interruption of the portal vein and resultant derangement in hepatic circulation.

The shunts had the appearance of normal veins ... liver in the right lobe and by occlusion of the left branch of the portal vein. This was accompanied by an increase in hepatic-artery flow ...

Symptoms may be caused by blood flowing directly from the intestines and spleen into the systemic veins (portosystemic shunts). For someone born with congenital agenesis of the portal vein ...