title: Rapidly progressive aortic incompetence in juvenile ankylosing spondylitis: a case report.
mesh_terms: D000293:Adolescent; D001021:Aortic Valve; D001022:Aortic Valve Insufficiency / Q000209:etiology* / Q000235:genetics; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000175:diagnosis; D006680:HLA Antigens / Q000032:analysis*; D015796:HLA-B27 Antigen; D006337:Heart Murmurs; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000175:diagnosis; D013167:Spondylitis, Ankylosing / Q000150:complications*
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen