title: Aneurysm of the azygos artery.
abstract: A saccular aneurysm of the azygos artery is reported. The relationship between (a) this aneurysm and the primitive vessel from which it arises and (b) the aneurysms which are frequently seen involving persistent carotid-basilar anastomoses is described.
mesh_terms: D000328:Adult; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging*