title: Tracheal soft tissue mass. Case reports.
mesh_terms: D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000532:radiotherapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014134:Tracheal Neoplasms / Q000000981:diagnostic imaging* / Q000532:radiotherapy