Subepiglottic Cyst

This disease results in a cyst developing in the tissue below the epiglottis. The cause is unknown, but we do know that the lining of the cyst will continue to secrete fluid if not completely destroyed or removed. Clinical signs included rattling, wheezing or gurgling when the horse is exercising. We can also see food and water coming from the horse’s nostrils.

Subepiglottic cyst

Diagnostic test

Video endoscopy


The cyst lining needs to be completely destroyed or removed. With the horse standing and sedated a laser can be used to destroy the lining of the cyst. Another approach is to place the horse under general anesthesia and remove the cyst through a laryngotomy incision (under the horse’s chin).