title: [Some difficulties and errors in the diagnosis of primary lung sarcoma].
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D004445:Echinococcosis, Pulmonary / Q000175:diagnosis; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D012509:Sarcoma / Q000175:diagnosis*
vernacular_title: O nekotorykh trudnostiakh i oshibkakh v diagnostike pervichnoĭ sarkomy legkogo.