Metaplastic bone formation in the lung.
D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D008297:Male; D008679:Metaplasia; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D011859:Radiography