Congenital Hepatic Arteriovenous Malformation Presenting as Isolated Massive Hepatomegaly in an Otherwise Healthy Neonate: A Case Report.

Congenital hepatic arteriovenous malformations (HAVMs), though rare, carry high morbidity and mortality rates if left undiagnosed. The usual clinical presentation is in infancy with congestive heart failure, anaemia and hepatomegaly. There are reports of presentation as persistent pulmonary hypertension in newborns and reports of their spontaneous regression as well.