Screening for lung cancer.
D000328:Adult; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology; D008297:Male; D008400:Mass Chest X-Ray; D008403:Mass Screening; D012907:Smoking / Q000150:complications; D013183:Sputum / Q000166:cytology