Peer-reviewed veterinary case report
Nasal and sinus tumors in older male cats - signs and diagnosis
By Mukaratirwa, S et al.·Published in Journal of feline medicine and surgery·2001·Department of Pathology, Netherlands·View original on PubMed →
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Original publication title: Feline nasal and paranasal sinus tumours: clinicopathological study, histomorphological description and diagnostic immunohistochemistry of 123 cases.
- Species:
- cat
Plain-English summary
A 10-year-old male cat was brought in with a runny nose and facial swelling, which led to a diagnosis of a nasal tumor. After examining tissue samples, the vet found that most of these tumors were malignant, with lymphoma being the most common type. The cat's treatment options would typically include surgery or other therapies depending on the specific tumor type. Unfortunately, the prognosis for malignant tumors in older cats can be serious, so early detection and treatment are crucial for the best outcome.
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Abstract
Histological examination was performed in 123 cats with primary nasal and paranasal sinus tumours; 117 had undergone surgical biopsy and six necropsy. Special stains and immunohistochemistry were performed on poorly differentiated cases. Ninety-two percent (113/123) of the tumours were malignant. There was an increased risk for old cats (mean age of 10.9 years), and a male predilection (59% males). Clinical signs and breeds varied with the histological type of tumour. Thirty-nine percent (48/123) of the cases presented with nasal discharge, 21% (26/123) with dyspnea, 20% (24/123) with facial swelling, and 15% (19/123) with epistaxis. Forty-three percent (53/123) of the tumours were of epithelial origin. Adenocarcinomas (18/53) and squamous cell carcinomas (17/53) were the most common epithelial tumours. Fifty percent (26/53) of the epithelial tumours originated from the pseudo-stratified respiratory epithelium of the nasal cavity, 28% (15/53) from the stratified squamous epithelium of the vestibule, 9% (5/53) from olfactory epithelium, 9% (5/53) from submucosal glands and 4% (2/53) from minor salivary glands. Malignant lymphoma (35/123) was the most common tumour. Seventy-one percent (25/35) of the malignant lymphomas were B-cell tumours and 29% (10/35) were T-cell tumours. Six cases of malignant lymphomas were proved to be epitheliotropic T-cell lymphomas. This is the first report of a primary nasal epitheliotropic T-cell lymphoma in cats.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/11795961/