Nasopharyngeal stenosis

Patients with nasopharyngeal stenosis have problems breathing due to scarring or malformation of the back of the nasal passage. This may occur following a severe infection or may be the result of regurgitation under anesthesia.

The best treatment option for affected dogs and cats is balloon dilation followed by stenting. We use CT images, fluoroscopy and endoscopy to assess the lesion, widen the space and place a stent. This holds the affected area open and makes the patient much more comfortable.

nasopharyngeal stenosis


This procedure is performed under anesthesia, and uses endoscopy and fluoroscopy. The affected area at the back of the nose is viewed with an endoscope, and a guidewire is directed across the stricture. In some cases, a new opening must be created with a needle. A balloon is used to open up the affected area. A stent (temporary or permanent) is then placed across the damaged tissue to prevent recurrence of the stricture.

Indications to Take this Procedure

Nasopharyngeal stenosis.

Patient Eligibility

All dogs or cats of any size can undergo this operation.


$4000-$8000, depending on duration of procedure and stent type. In addition, a CT scan of the nose and throat is needed for pre-op planning. Temporary stents are removed after 3-4 weeks; this costs about $800.

Length of Stay

24 hours post-procedure to monitor discomfort.

Potential Complications

Minor long-term complications are common, and include chronic nasal infection, with sneezing, discharge and odor. Major complications are less common, but include stent migration, stricture recurrence, and damage to the palate (oro-nasal fistula).

Anticipated Outcome

This is a salvage procedure and is designed to let the patient eat, sleep, and play more comfortably. Owners should be prepared for long term complications, which can require additional interventions.


If you have any questions, please contact the Texas A&M Interventional Radiology & Endoscopy Service via email at or by phone at 979-845-2351.