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OJVRTM

Online Journal of Veterinary Research

(Including Medical and Laboratory Research)

Established 1994
ISSN 1328-925X

 

Volume 27 (10): 553-561, 2023.


Cutaneous phaeohyphomycosis in a horse.

 

Eberly J1 DVM, Wilke M2 DVM, Singh K3 DVM, PhD DACVP.

 

1Pathobiology, 3Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, 2Griggsville Veterinary Clinic (Wilke), Griggsville, IL, USA. 62340 .

 

ABSTRACT

 

Eberly J, Wilke M, Singh K., Cutaneous phaeohyphomycosis in a horse, Onl J Vet Res., 27 (10): 553-561, 2023. A 4 year old intact female Quarter horse was presented for evaluation of multiple, non-painful, chronic cutaneous lesions on each wither. The lesions were slightly raised, approximately 2 cm in diameter, dark brown to black and ulcerated. These lesions were surrounded by hyperkeratotic rough dry skin and did not respond to previous antibiotic treatment. Histologically, cutaneous lesions were ulcerated and covered by neutrophils. The dermis was diffusely infiltrated by numerous epitheloid macrophages admixed with multinucleate giant cells, neutrophils, lymphocytes, plasma cells and rare eosinophils. Often inflammatory cells were arranged in discrete pyogranulomas and granulomas. Admixed with the inflammatory cells were brown, round, 7-50 m fungal bodies. Fungal culture revealed Bipolaris Spicifera. The clinical presentation, gross and microscopic morphology and mycotic culture in this case are consistent with cutaneous phaeohyphomycosis.

 

Key words: Bipolaris, cutaneous, dematiaceous, horse, phaeohyphomycosis.

 

 

 


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