title: [Indistinct pulmonary vascular outlines on chest roentgenograms--analysis of their mechanism and clinical usefulness (author's transl)].
mesh_terms: D001987:Bronchiectasis / Q000000981:diagnostic imaging; D006801:Humans; D008168:Lung / Q000098:blood supply* / Q000000981:diagnostic imaging; D013902:Radiography, Thoracic