Aortitis and ankylosing spondylitis.
D001014:Aortic Aneurysm / Q000150:complications; D001018:Aortic Diseases / Q000150:complications*; D001024:Aortic Valve Stenosis / Q000150:complications; D016918:Arthritis, Reactive / Q000150:complications; D001327:Autoimmune Diseases; D006801:Humans; D013167:Spondylitis, Ankylosing / Q000150:complications*