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Equine juvenile mandibular ossifying fibroma
C C Morse1, J E Saik, D W Richardson
1Laboratory of Large Animal Pathology, School of Veterinary Medicine, University of Pennsylvania, Kennett Square.
Veterinary Pathology
|November 1, 1988
Summary
Equine juvenile mandibular ossifying fibroma is a benign fibro-osseous lesion in young horses. Surgical removal via rostral mandibulectomy prevented recurrence, unlike incomplete excision.
Area of Science:
- Veterinary Pathology
- Equine Surgery
- Oral Tumors
Background:
- Benign proliferative fibro-osseous lesions occur in the rostral mandible of young horses.
- These lesions present distinct clinical, radiographic, and histological characteristics.
Purpose of the Study:
- To classify and characterize equine juvenile mandibular ossifying fibroma.
- To evaluate the efficacy of different surgical approaches for this condition.
Main Methods:
- Histological examination of six cases.
- Surgical excision (incomplete and rostral mandibulectomy).
- Clinical and radiographic assessment.
Main Results:
- Histology showed an abrupt transition from fibroblastic stroma to osteoblasts forming osteoid spicules and bony trabeculae.
- Incomplete excision led to local recurrence.
- Rostral mandibulectomy resulted in no recurrence.
Conclusions:
- Equine juvenile mandibular ossifying fibroma is a distinct entity based on its predilection for young horses' rostral mandibles and unique histological features.
- Complete surgical excision, specifically rostral mandibulectomy, is recommended to prevent recurrence.