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Chromomycosis in a horse.

H N Abid1, P A Walter, H Litchfield

  • 1Breathitt Veterinary Center, Murray State University, Hopkinsville, KY 42240.

Journal of the American Veterinary Medical Association
|September 15, 1987
PubMed
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A rare fungal skin infection, chromomycosis, was diagnosed in a horse with a pigmented dermal nodule. Surgical removal of the lesion resulted in a complete recovery, highlighting its importance in differential diagnoses for equine skin tumors.

Area of Science:

  • Veterinary Dermatology
  • Mycology

Background:

  • Chromomycosis is a rare fungal infection affecting the skin.
  • It is caused by dematiaceous fungi.
  • Diagnosis in horses is infrequent, making it a diagnostic challenge.

Observation:

  • A 6-year-old Quarter Horse gelding presented with a firm, pigmented, spherical dermal nodule on its tuber ischii.
  • The excised lesion revealed multiple pyogranulomas in the dermis.
  • Microscopic examination identified fungal elements consistent with chromomycosis.

Findings:

  • The excised nodule showed histological evidence of chromomycosis.
  • Surgical excision led to complete resolution of the lesion without recurrence.
  • The case underscores the need to consider chromomycosis in equine dermatology.

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Implications:

  • This case highlights chromomycosis as a differential diagnosis for pigmented skin nodules in horses.
  • Early diagnosis and surgical intervention can lead to favorable outcomes.
  • Further research into equine chromomycosis prevalence and treatment is warranted.