Hepatic infarction and acute liver failure in children with extrahepatic biliary atresia and cirrhosis.

Acute hepatic failure developed in four patients (aged 7 to 13 months) who had extrahepatic biliary atresia treated initially by portoenterostomy. Two were stable outpatients with minimal jaundice, while the other two were hospitalized for metabolic or nutritional complications. Postmortem examination in each patient revealed massive acute hepatic infarction with few surviving hepatocytes. In all cases, the hepatic failure had been preceded by an episode of hypotension and/or hypovolemia. The exact pathogenesis of the infarction remains unclear but it may be related to decreased hepatic blood flow secondary to biliary obstruction. The only effective treatment for these patients is intensive supportive care and urgent liver transplantation.