title: Choanal atresia and secondary nasopharyngeal stenosis in a dog.
abstract: A 20-month-old, intact male shih tzu was evaluated for chronic upper airway disease. Endoscopic examination established a diagnosis of choanal atresia, a developmental anomaly of the posterior nasal cavity. Although surgical intervention provided temporary relief, stenosis of the nasopharynx by obstructive scar tissue was confirmed within four weeks. A permanent tracheostomy provided long-term relief of the respiratory difficulty. This is the first report of choanal atresia or nasopharyngeal stenosis in a dog.
authors.affiliation: Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana 61802, USA.
authors.forename: B R
authors.initials: BR
authors.lastname: Coolman
authors.forename: S M
authors.initials: SM
authors.lastname: Marretta
authors.forename: B C
authors.initials: BC
authors.lastname: McKiernan
authors.forename: J F
authors.initials: JF
authors.lastname: Zachary
mesh_terms: D000402:Airway Obstruction / Q000601:surgery / Q000662:veterinary; D000818:Animals; D002754:Choanal Atresia / Q000150:complications / Q000601:surgery / Q000662:veterinary*; D004283:Dog Diseases / Q000175:diagnosis / Q000601:surgery*; D004285:Dogs; D008297:Male; D015508:Nasal Obstruction / Q000601:surgery / Q000662:veterinary; D009302:Nasopharyngeal Diseases / Q000601:surgery / Q000662:veterinary*; D009305:Nasopharynx / Q000473:pathology / Q000601:surgery; D014139:Tracheostomy / Q000662:veterinary