The aortic lesion of ankylosing spondylitis.
D000844:Ankylosis; D001011:Aorta / Q000473:pathology*; D006801:Humans; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000473:pathology*
AORTA/pathology; SPONDYLITIS, ANKYLOSING/pathology