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Intraosseous epidermoid cyst in a horse
A C Camus1, D J Burba, M A Valdes
1Department of Veterinary Pathology, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803, USA.
Journal of the American Veterinary Medical Association
|August 1, 1996
Summary
An intraosseous epidermoid cyst in a horse
Area of Science:
- Veterinary Medicine
- Equine Surgery
- Oral Pathology
Background:
- A 21-year-old American Saddle Horse presented with a right hemimandible swelling.
- Radiographic findings suggested a bone cyst, prompting surgical investigation.
Observation:
- Surgical exploration revealed a cyst containing mucinous fluid and keratin.
- Microscopic examination showed the cyst was lined by squamous epithelium with hyperkeratosis and parakeratosis.
Findings:
- Histologic features confirmed the diagnosis of an intraosseous epidermoid cyst.
- The cyst contained keratin debris surrounded by foreign-body giant cells.
Implications:
- Surgical curettage, tooth extraction, and iodine flushing were performed.
- Nine months post-surgery, the hemimandible swelling resolved, with a significant reduction in size.