title: Double primary carcinomas of the lung.
mesh_terms: D002282:Adenocarcinoma, Bronchiolo-Alveolar / Q000000981:diagnostic imaging* / Q000401:mortality; D000368:Aged; D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000401:mortality; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000401:mortality; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging* / Q000401:mortality; D011859:Radiography; D013997:Time Factors