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J Oral Pathol Med. 1994 Jan;23(1):41-4.

Ameloblastomas in the horse: a critical review and report of an additional example.

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  • 1Division of Oral Pathology and Oncology, University of Colorado School of Dentistry, Denver 80262.


Previously published cases of ameloblastoma in the horse are reviewed in detail for their acceptability as examples of that tumor; an additional one is described. So far, this rare equine lesion has been shown to have two histologic patterns. The first consists of islands and sheets of epithelium that exhibit the basal cell characteristics of ameloblastoma; the central cells comprise stellate reticulum. The second exhibits these basal cell features less markedly and the central cells are spindle-shaped and closely packed. The biologic behavior of the equine ameloblastoma is thought to be the same as in human beings, a slowly growing, invasive lesion that does not metastasize. However, this conclusion requires confirmation.

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