Peer-reviewed veterinary case report
Lipid-rich mammary cancer with belly spread in a dog
By Isabela F. S. Perossi et al.·Published in Brazilian Journal of Veterinary Pathology·2020·Profissional Heath Program Resident Med. Vet. e Saúde (MEC/MS)., BR·View original on DOAJ →
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Original publication title: Lipid rich carcinoma in canine mammary gland with metastasis in the abdominal cavity
- Species:
- dog
Plain-English summary
A 4-year-old spayed German Shepherd was brought in with a large mass in her mammary area that was attached to her abdomen. Unfortunately, the tumor was too advanced for surgery, and the decision was made to euthanize her during the procedure. A post-mortem examination revealed that the cancer had spread to her abdominal cavity, lymph nodes, and lungs. The tumor was identified as a rare and aggressive type of cancer called lipid-rich carcinoma. This case highlights the importance of considering such aggressive tumors when diagnosing abdominal masses in dogs.
People also search for: dog mammary tumor symptoms · German Shepherd cancer treatment · dog euthanasia decision · signs of cancer in dogs
Abstract
Lipid-rich carcinoma of the mammary gland is a rare variant of cancer and extremely uncommon in dogs. This case report describes the clinical and histopathological aspects of lipid-rich carcinoma in a female dog. A four-year-old spaeyd German Shepherd dog with enlarged volume adhered to the caudal and inguinal abdominal mammary region was examined. The impossibility of surgical ressection led to euthanasia during the surgical procedure. At necropsy, analysis of the abdominal cavity revealed the presence of an irregularly shaped mass, whitish with red areas, in the intrapelvic region. Also, metastases in axillary and mediastinal lymph nodes and right lung were observed. Histopathological analysis of the tumor in the mammary glands and intrapelvic mass showed malignant neoplastic proliferation of epithelial cells. The cells had a distinct shape and boundary, a well-defined cytoplasm, and the presence of intracytoplasmic macro and micro vacuoles, which sometimes pushed the nuclei to the periphery. The lymph nodes had lost the histological architecture due to metastasis. Marked and diffuse immunostaining of tumor cells in the cytoplasm by pancytokeratin, GATA 3 and 35BH11 confirmed the epithelial origin of the tumor. This very aggressive and uncommon neoplasm should be considered as a possible metastasi in the differential diagnosis of tumors of the abdominal cavity.
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Search related cases →Original publication on DOAJ: https://doi.org/10.24070/bjvp.1983-0246.v13i1p26-32