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M. R. Story, E. M. Gaughan, G. A. Andrews, S. Balch

Fibrosarcoma over the tarsal groove of a 14-month-old Quarter horse

Keywords: horse, tumour, Fibrosarcoma

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 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.

Veterinary and Comparative Orthopaedics and Traumatology, Schattauer

Print ISSN: 0932-0814
Volume: 18, 05/2005
Pages: 115 - 117

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