Clinical and Pathological Features in Horses With Advanced Arytenoid Chondritis.

Veterinary Pathology
Pompei BolfaNorm G Ducharme

Abstract

Equine arytenoid chondritis causes airway obstruction and abnormal upper airway noise due to a space-occupying lesion(s) and decreased abduction. Our objective was to compare clinical scores and ultrasonographic findings with gross and microscopic lesions of naturally occurring arytenoid chondritis, in order to guide surgical treatment. Seventeen naturally affected horses with advanced/severe chronic arytenoid chondritis and 4 control arytenoid cartilages were evaluated after partial arytenoidectomy. Cartilages were sectioned caudal to the corniculate process and the body of each arytenoid was measured. We assessed total gross area (TA), percentage of viable cartilage (VC), percentage of viable cartilage on the lateral wall, and medial expansion. Retrospectively, the gross lesions were used to suggest 2 preferred surgical management (SM) groups: those requiring partial arytenoidectomy and those amendable to focal medial resection (a conservative SM). TA of horses with arytenoid chondritis was significantly larger than controls (P = .005), due to a layered lesion composed of cavitation, granulation tissue, fibrosis, inflammation, hemorrhage, and edema, with relatively equal medial and lateral expansion that distorted the geometr...Continue Reading

References

Jan 1, 1984·Australian Veterinary Journal·A A MacLean, R G Robertson-Smith
Mar 1, 1982·Arthritis and Rheumatism·W J McCuneD E Trentham
Nov 1, 1980·Veterinary Pathology·R JensenC E Rehfeld
Feb 20, 2013·Equine Veterinary Journal·K S GarrettJ Cheetham
Apr 6, 2013·Veterinary Pathology·K N Gibson-CorleyD K Meyerholz

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