title: Obstruction of the nasopharynx secondary to choanal polyp of antral origin.
authors.forename: D
authors.initials: D
authors.lastname: MYERS
mesh_terms: D006801:Humans; D008443:Maxillary Sinus; D008444:Maxillary Sinus Neoplasms; D009298:Nasal Polyps; D009305:Nasopharynx; D009369:Neoplasms; D009666:Nose; D009669:Nose Neoplasms; D011127:Polyps