title: Extra- and intrasplenic artery aneurysms in portal hypertension.
abstract: Extra- and intrasplenic arterial aneurysms have occasionally been encountered in cases of portal hypertension both with and without cirrhosis. The exact pathogenesis is speculative; however, it is postulated that hyperkinetic splenic circulation, probably related to hepatic arterial insufficiency or hypoplasia, constitutes the primary pathogenic mechanism. Other factors such as splenomegaly and hormonal influence may be contributory.
mesh_terms: D000328:Adult; D000783:Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology*; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000150:complications*; D008103:Liver Cirrhosis / Q000150:complications; D011859:Radiography; D013157:Splenic Artery / Q000000981:diagnostic imaging