Coexisting rheumatoid arthritis and ankylosing spondylitis.
D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000000981:diagnostic imaging; D006225:Hand / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D010384:Pelvic Bones / Q000000981:diagnostic imaging; D011859:Radiography; D013131:Spine / Q000000981:diagnostic imaging; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging