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OJVRTM
Online Journal of Veterinary Research©
Volume 19(1): 26-31, 2015. Redacted 2018.
Case Report:
Cutaneous phaeohyphomycosis in a horse
Eberly J1 DVM ⃰, Wilke M2 DVM,
Singh K3 DVM, PhD, DACVP
1Department of
Pathobiology, 3Veterinary Diagnostic Laboratory, College of
Veterinary Medicine, University of Illinois Urbana-Champaign, Urbana, IL 61802,
2Griggsville Veterinary Clinic (Wilke), Griggsville,
IL, 62340, USA. Corresponding author: Dr. J. Eberly -
jeberly2@illinois.edu
ABSTRACT
Eberly J, Wilke M,
Singh K Cutaneous phaeohyphomycosis in a
horse. Online J Vet Res., 19(1):
26-31, 2015. 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 µm 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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