title: [Plain radiographic and tomographic analysis of early cancer of the pulmonary hilum (1)].
mesh_terms: D001984:Bronchial Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008722:Methods; D014056:Tomography, X-Ray / Q000379:methods*