title: Excision of a congenital laryngeal cyst in a five-month-old dog via a lateral extraluminal approach.
abstract: METHODS
  A 5-month-old neutered male Golden Retriever was evaluated because of moderate stridor, exercise intolerance, and dyspnea. The dog had been neutered 3 weeks previously, and the referring veterinarian identified a large fluid-filled swelling on the left lateral aspect of the larynx during anesthetic intubation for that surgery. The referring veterinarian drained fluid from the mass by use of needle centesis via the oral cavity, which resulted in temporary improvement in clinical signs; however, the clinical signs returned soon thereafter.
  
  
  RESULTS
  A large, soft, spherical mass was located between the left arytenoid and thyroid cartilages and axial to the left ceratohyoid bone, thus causing partial obstruction of the rima glottidis. Laryngoscopic examination, computed tomography (CT), and cytologic evaluation of aspirates performed before surgery; examination during surgery; and histologic evaluation of tissues following surgical excision confirmed the diagnosis of a laryngeal cyst.
  
  
  RESULTS
  Complete surgical excision was successfully performed via a lateral extraluminal approach to the larynx. One week after surgery, the dog coughed only occasionally. Twelve months after surgery, the owner reported that the dog was clinically normal with no recurrence of clinical signs, and laryngoscopic examination revealed no recurrence of the cyst or other pathological changes in the laryngeal region.
  
  
  CONCLUSIONS
  Congenital laryngeal cysts are rarely reported in domestic animals. The information provided here described the CT appearance of a laryngeal cyst and the use of CT in diagnosis and surgical planning. Congenital laryngeal cysts can be resected via a lateral submucosal approach.
authors.affiliation: Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA. CuddyL@vetmed.ufl.edu
authors.forename: Laura C
authors.initials: LC
authors.lastname: Cuddy
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Bacon
authors.forename: Alastair R
authors.initials: AR
authors.lastname: Coomer
authors.forename: Cynthia J
authors.initials: CJ
authors.lastname: Jeyapaul
authors.forename: Barbara J
authors.initials: BJ
authors.lastname: Sheppard
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Winter
mesh_terms: D000818:Animals; D003560:Cysts / Q000601:surgery / Q000662:veterinary*; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D007818:Laryngeal Diseases / Q000601:surgery / Q000662:veterinary*; D008297:Male