Chest roentgenographic signs of collagen vascular disease.
D003095:Collagen Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D008168:Lung / Q000098:blood supply; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D011859:Radiography; D014652:Vascular Diseases / Q000000981:diagnostic imaging*