Cystic medial necrosis of the ascending aorta.
D000328:Adult; D001011:Aorta / Q000473:pathology; D001018:Aortic Diseases / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008382:Marfan Syndrome / Q000473:pathology*; D009336:Necrosis