Peer-reviewed veterinary case report
Fibrosarcoma over the tarsal groove of a 14-month-old Quarter horse.
- Journal:
- Veterinary and comparative orthopaedics and traumatology : V.C.O.T
- Year:
- 2005
- Authors:
- Story, M R et al.
- Affiliation:
- Kansas State University · United States
- Species:
- horse
Plain-English summary
A 14-month-old male Quarter horse was brought in because he was limping badly on his right back leg. The veterinarian found a firm mass about the size of a small pillow near the lower part of his leg. Tests showed that the mass was likely a type of tumor called fibrosarcoma, which is a cancer that develops in connective tissue. The horse had surgery to remove the tumor, and a year and a half later, he showed no signs of limping or any regrowth of the mass, indicating that the treatment was successful.
Abstract
A 14-month-old male Quarter horse was presented for evaluation of a grade 3 out of 5 (grade 0 = sound; grade 5 = non-weight bearing) right rear lameness. A firm, 8 x 16 cm mass was palpable at the caudal medial aspect of the distal tibia and proximal tarsal region of the right hind limb. A percutaneous needle aspirate contained mesenchymal cells that were moderate to large in size with single, oblong nuclei. Differential diagnoses included fibrous hyperplasia, fibroma, or well-differentiated fibrosarcoma. Excisional biopsy for both definitive diagnosis and treatment was offered and selected by the owner. A fibrosarcoma was confirmed by histological examination of the mass. One and a half years after resection signs of lameness or evidence of regrowth of the mass were not evident.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/16594208/