title: Causes of a tracheal mass. Tracheal cylindroma.
mesh_terms: D000328:Adult; D003528:Carcinoma, Adenoid Cystic / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011859:Radiography; D014132:Trachea / Q000000981:diagnostic imaging*; D014133:Tracheal Diseases / Q000000981:diagnostic imaging; D014134:Tracheal Neoplasms / Q000000981:diagnostic imaging*