Treatment of injection site osteosarcoma in a dog

Osteosarcoma is a highly malignant mesenchymal tumor that rarely occurs at extraskeletal sites. The diagnosis of extraskeletal osteosarcoma (EOS) relies on the characteristic histopathology of mesenchymal cells with high mitotic index and bone production with exclusion of a bony origin. In cats and dogs, injection site sarcomas have been associated with inflammatory reaction due to injection of vaccines and other products. Some injection site sarcomas have been diagnosed as EOS in the cat. EOS is associated with a poor prognosis with high rates of metastasis at diagnosis.
Source: Advances in Small Animal Medicine and Surgery - Category: Veterinary Research Tags: Oncology Source Type: research