Peer-reviewed veterinary case report
Dog with bone cancer tumor in jaw salivary gland and lung spread
By Thomsen, B V & Myers, R K·Published in Veterinary pathology·1999·Department of Veterinary Pathology, United States·View original on PubMed →
PetCaseFinder translated the abstract of this peer-reviewed paper into plain English so pet owners can read it. We do not publish original research — every detail traces back to the citation above. How we work →
Original publication title: Extraskeletal osteosarcoma of the mandibular salivary gland in a dog.
- Species:
- dog
Plain-English summary
A 14-year-old spayed female shepherd/collie mix had a large mass removed from below her right ear, which turned out to be an aggressive type of bone cancer called osteosarcoma. Unfortunately, a month after surgery, the mass returned and had spread to her lungs, lymph nodes, and kidneys. This case highlights the seriousness of tumors in the salivary glands, as most are found to be cancerous. Sadly, the prognosis for this dog was poor due to the aggressive nature of the cancer and its spread.
People also search for: dog ear mass · osteosarcoma in dogs · dog salivary gland tumor treatment · dog cancer prognosis · shepherd collie cancer symptoms
Abstract
A 14-year-old spayed female shepherd/collie crossbred dog had a 6 x 4-cm mass excised from below the right ear. The partially encapsulated, neoplastic mass had a necrotic core and was embedded in the mandibular salivary gland. Histologically, the mass was composed of numerous multinucleate giant cells and large, oval, pleomorphic cells that produced osteoid. Neoplastic cells were immunoreactive for vimentin and actin but not for keratin, desmin, or S-100 protein. At postmortem examination 1 month later, an 11-cm spherical mass had recurred at the surgical site, and there were metastatic nodules in the lungs, ipsilateral mandibular lymph nodes, and kidney. The tumor was diagnosed as an osteosarcoma of the mandibular salivary gland with pulmonary, lymphatic, and renal metastasis. In addition, a 17-year survey of canine salivary-gland neoplasms revealed that most were adenocarcinomas or carcinomas.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/9921759/