Abstract

Portal ven aneurysm (PVA) is a rare vascular abnormality defined as a focal dilatation of the portal venous system. There are two types: Intrahepatic and extrahepatic. Intrahepatic localization is more freguent. Two major causes, congenital and acquired, have been proposed. The most important acquired etiologies of PVA are underlying hepatocelluler disease and portal hypertension. Congenital PVA results from an inherent weakness of the vessel wall. Clinical manifestations are different depending on the size of the aneurysm. Small aneurysms are usually asymptomatic. In the cases incidentally diagnosed follow up is proposed. In this case report, an asymptomatic 69-year-old man with portal vein aneurysm diagnosed incidentally by ultrasonography and color Doppler ultrasonography is presented.