Peer-reviewed veterinary case report
Mammary tumors in cats from Rio de Janeiro studied clinically
By Amorim, Fernanda V et al.·Published in Journal of feline medicine and surgery·2006·Veterinary Faculty, Brazil·View original on PubMed →
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Original publication title: Clinical, cytological and histopathological evaluation of mammary masses in cats from Rio de Janeiro, Brazil.
- Species:
- cat
Plain-English summary
A group of cats with lumps in their breasts were examined, and most of these lumps turned out to be cancerous tumors. The study looked at 20 cases and found that 19 were adenocarcinomas, a type of malignant tumor. Treatment options included surgery to remove the affected breast, surgery plus chemotherapy, or just chemotherapy. Unfortunately, some cats had tumors that were too large or had spread, which made treatment more complicated. This highlights the importance of regular checks for lumps in cats, as early detection can significantly affect outcomes.
People also search for: cat breast lump treatment · feline mammary cancer symptoms · how to check cat for tumors
Abstract
The vast majority of mammary tumors in cats are malignant with high metastatic and mortality rates. This study evaluated clinical, cytological and histopathological aspects of 20 cases of cat mammary masses deriving from the city of Rio de Janeiro. Data on history, macroscopic description, evidence of regional lymph node and distant metastases, clinical examination and treatment were collected. The cats were treated with unilateral mastectomy, unilateral mastectomy plus chemotherapy or chemotherapy alone. Tissues were submitted for cytological and histological evaluation. Histopathological analysis described one case of mammary hyperplasia and 19 cases of adenocarcinoma. Inadequate surgical margins were obtained in two cats while six showed evidence of microscopic invasion in other mammary glands. Multiple mammary involvement and greater tumor size (diameter over 7.05 cm) were correlated with increased chance of local metastases. Ulceration of tumors and metastases were common. These facts support the highly malignant nature of this neoplasia and emphasize the risks associated with delay in diagnosis and treatment of feline patients. In conclusion, mammary palpation should be performed routinely in the clinical practice.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/16815063/