title: Coin shadows in the lung.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery