Lung changes in ankylosing spondylitis.
D006801:Humans; D008297:Male; D008875:Middle Aged; D011658:Pulmonary Fibrosis / Q000150:complications* / Q000000981:diagnostic imaging; D011859:Radiography; D012129:Respiratory Function Tests; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000000981:diagnostic imaging