title: Detection for lung cancer: present methods and their worths.
mesh_terms: D000328:Adult; D003581:Cytodiagnosis; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008400:Mass Chest X-Ray; D008722:Methods; D013997:Time Factors