Syphilitic aneurysms of the innominate artery.
Syphilitic aortitis can cause formation of fusiform or saccular aneurysms of the ascending aorta or transverse arch. The authors report 3 cases in which a saccular aneurysm developed at the origin of the innominate artery and was seen as a mediastinal mass on the chest radiograph.
D000328:Adult; D000368:Aged; D000783:Aneurysm / Q000209:etiology*; D001013:Aorta, Thoracic; D001014:Aortic Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology; D016122:Brachiocephalic Trunk; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D013589:Syphilis, Cardiovascular / Q000150:complications*