SAEVA Congress 2018 Proceedings | 12-15 February 2018 | ATKV Goudini Spa
Recurrent laryngeal neuropathy
Increased echogenicity of the cricoarytenoideus lateralis muscle has a very high
specificity and sensitivity for the diagnosis of recurrent laryngeal neuropathy and is
superior to resting endoscopy in detecting horses that have abnormal arytenoid
movement during exercising treadmill endoscopic examination.
Left recurrent laryngeal neuropathy
The effect of denervation on the size (cross-sectional area and diameter) of the
cricoarytenoideus lateralis muscle remains to be determined in horses with left
recurrent laryngeal neuropathy. Laryngeal ultrasonography is particularly valuable in
guiding decision making in horses with grade II and III left arytenoid movement.
Arytenoid chondritis
Increased size, abnormal echogenicity (heterogeneous and increased) and abnormal
shape (loss of the normal trumpet shape) of the arytenoid cartilage has been described
in horses with arytenoid chondritis upon laryngeal ultrasonographic evaluation. The
cross-sectional area of chondritic cartilages are approximately double that of the
contralateral normal arytenoid cartilage. Small hyperechoic echoes consistent with gas
are often seen within affected chondritic arytenoid cartilages. Cavitated lesions within
affected arytenoid cartilages and masses on the medial side of the chondritic arytenoid
cartilage can be identified.
Left arytenoid chondritis
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