Abstract
Extrahepatic portal vein thrombosis (EHPVT) is associated with abnormal circulating procoagulants and anticoagulants. Eleven children with EHPVT and abnormal coagulation factors underwent a mesenterico-left portal vein bypass to restore portal flow. Coagulation factors had returned to normal by one year. The data suggest that portal venous flow is essential for maintaining normal coagulation.
