Peer-reviewed veterinary case report
Dog with non-joint synovial sarcoma tumor on face
By Takimoto, N et al.·Published in Journal of comparative pathology·2014·Tokyo University of Agriculture and Technology, Japan·View original on PubMed →
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Original publication title: A non-joint tissue biphasic synovial sarcoma in a dog.
- Species:
- dog
Plain-English summary
A 14-year-old mixed breed dog was found to have a lump in her cheek area, which was diagnosed as a type of tumor called biphasic synovial sarcoma. Unfortunately, the decision was made to humanely euthanize her, and a thorough examination after her passing showed that the tumor had not spread to other tissues. This case is notable because it is the first report of a synovial sarcoma occurring in a non-joint area in dogs.
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Abstract
A subcutaneous tumour was identified in the malar region of a 14-year-old neutered female mixed breed dog. The dog was humanely destroyed and necropsy examination was performed. The tumour did not invade neighbouring tissues and no metastasis was found. Microscopically, the tumour showed a range of features including the presence of multinucleated giant cells, chondrocyte differentiation and cystic or slit-like structures. All of these features are consistent with previously reported descriptions of synovial sarcomas in dogs. Mesenchymal cells accounted for the majority of the tumour, but cytokeratin-positive epithelioid components were also confirmed by immunohistochemistry. The tumour was diagnosed as a biphasic type of synovial sarcoma. Synovial sarcoma in man may develop in tissues unrelated to joints and this is the first report of a non-joint synovial sarcoma in a dog.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/24447570/