title: [Early X-ray diagnosis of bronchogenic carcinoma].
mesh_terms: D000328:Adult; D000368:Aged; D002283:Carcinoma, Bronchogenic / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011859:Radiography