This is one of the common upper airway pathologies found in horses that can cause poor performance and noise when breathing out (expiration) – respiratory noise and exercise intolerance. It looks similar to the Dorsal Displacement of the Soft Palate but is a totally different pathology.

Epiglottic entrapment is when the aryepiglottic fold completely envelops the apex and lateral margins of the epiglottis. The difference with DDSP is when the soft palate moves dorsal to the epiglottis.

Treatment:
Transoral axial division using a curved bistoury. This is simply a hook bistoury that is inserted in the other nostril to where the endoscope is (usually the left nostril for that the endoscope should be in the right one, for safety reasons). the mucosa is cut by two or three swings of the bistoury. You can see the hook n one of the pictures. Another way to preform this procedure is by using a laser.