title: Radiologically occult lung cancer. Report of 26 cases.
mesh_terms: D002282:Adenocarcinoma, Bronchiolo-Alveolar / Q000175:diagnosis* / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery; D000328:Adult; D000368:Aged; D001995:Bronchography; D001999:Bronchoscopy; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery; D008297:Male; D008875:Middle Aged; D013183:Sputum; D013997:Time Factors