Page 696 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Respir atory system: 3.2 Surgical conditions of the respir atory tr act 671

VetBooks.ir 3.129

Fig. 3.129 Endoscopy of both guttural pouches, showing marked swelling of the temporohyoid articulation,
associated with marked reddening and mucosal inflammation on the right (affected) side (arrows).

3.130 3.131

Fig. 3.130 Serous discharge from the temporohyoid
joint of a horse with dysphagia. This horse responded to
a prolonged course of antibiotics and anti-inflammatory
agents. Fig. 3.131 CT scan showing thickening and
destruction of the right temporohyoid articulation
(arrow), compared with the normal left joint.
can be corneal ulceration due to neurological com-
promise of blinking. The presentation is often acute
despite the apparently chronic nature of the disease. side can be helpful. Fracture of the stylohyoid bone
can be observed as marked thickening of the bone.
Diagnosis Purulent or serous discharge can be noted from the
Endoscopy of the guttural pouch is the most reli- articulation (Fig. 3.130). Other diagnostic aids are
able way of establishing a diagnosis. Usually, there often used due to the slightly confusing nature of the
is swelling, and inflammation associated with the clinical signs. Diagnosis in the majority of cases is
temporohyoid articulation (Fig. 3.129). These signs possible using CT, when signs of marked thickening
can be difficult to interpret as they are somewhat around the temporohyoid joint are usually observed
subjective and comparison with the contralateral (Fig. 3.131).