Extraskeletal fibroblastic osteosarcoma in a rabbit (Oryctolagus cuniculus)
2001
Renfrew, H. | Rest, J. R. | Holden, A. R.
A seven‐year‐old rabbit was presented with a non‐painfui mass in the right upper lip. Tissue samples from the mass at three different stages of the disease process were diagnosed sequentially as an osteogenic sarcoma, a fibroblastic tumour with rudimentary osteoid formation and, lastly, a fibrosarcoma. No bone involvement or metastatic disease was found. The final diagnosis was of an extraskeletal fibroblastic osteosarcoma, which is, to the authors' knowledge, the first reported such case in a domestic rabbit. Without the first two tissue samples, an incorrect diagnosis would have been reached; therefore, this disease may be underrepresented in the literature.
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