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Peer-reviewed veterinary case report

Gingival Fibrosarcoma in a Horse.

Journal:
Journal of veterinary dentistry
Year:
2016
Authors:
Horbal, Apryle & Dixon, Padraic M
Affiliation:
1 University Veterinary Specialists · United States
Species:
horse

Plain-English summary

A 4-year-old thoroughbred cross mare was taken to the University of Edinburgh Veterinary School because she had a soft tissue tumor on her gums near her cheek teeth. The tumor was surgically removed and later identified as a fibrosarcoma, which is a type of cancer. To help treat it, the mare received chemotherapy directly into the tumor area. Although the tumor came back and required more treatments over 14 weeks, there was no sign of it regrowing three months after the last treatment. Nearly five years later, the horse showed no visible signs of the tumor returning.

Abstract

A 4-year-old thoroughbred cross mare was referred to the University of Edinburgh Veterinary School Equine Hospital for treatment of a soft tissue tumor on the buccal gingival margin of the rostral right maxillary cheek teeth. The lesion was initially surgically excised and diagnosed as a fibrosarcoma via histopathology. Adjunctive treatment with intralesional cisplatin chemotherapy was begun. The tumor recurred and was repeatedly treated with intralesional cisplatin injections and additional surgical resection over the course of 14 weeks. Despite the initial poor response to treatment, no further regrowth of the tumor occurred 3 months following its final treatment. The horse remained free of visible evidence of tumor nearly 5 years later.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/28218026/