Kasai portoenterostomy-new insights from hepatic morphology

Unoperated biliary atresia is associated with progressive intrahepatic ductopenia leading to diffuse biliary cirrhosis. Kasai portoenterostomy can result in the growth of large perihilar regenerative nodules, probably as a consequence of surviving intrahepatic ducts in this region. In some patients, long-term success after Kasai portoenterostomy may depend on hyperplasia of the perihilar liver.