title: Primary tracheal neoplasms.
mesh_terms: D000328:Adult; D000368:Aged; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010212:Papilloma / Q000473:pathology*; D014132:Trachea / Q000473:pathology; D014134:Tracheal Neoplasms / Q000473:pathology*