Peer-reviewed veterinary case report
Melanocytic tumors on cats' noses and treatment outcomes
By Reck, A & Kessler, M·Published in The Journal of small animal practice·2021·Oncology service of Hofheim Small Animal Hospital, Germany·View original on PubMed →
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Original publication title: Melanocytic tumours of the nasal planum in cats: 10 cases (2004-2019).
- Species:
- cat
Plain-English summary
A group of 10 cats with growths on their noses were diagnosed with melanocytic tumors, which can be either benign or malignant. Most of the cats had malignant melanoma, and some showed rapid changes in their tumors, indicating they were becoming more aggressive. Treatments included radiation therapy for six cats, which led to some improvement, but unfortunately, most of the cats had to be euthanized due to the tumors worsening. The average survival time after diagnosis was about 265 days.
People also search for: cat nose tumor treatment · melanoma in cats · signs of cat nasal cancer
Abstract
OBJECTIVES: To better characterise signalment, biologic behaviour, and treatment outcome in melanocytic tumours of the nasal planum in cats. MATERIALS AND METHODS: Retrospective study in cats diagnosed with histopathologically confirmed melanocytic tumours on the nasal planum. RESULTS: Ten cats were identified with melanocytic tumours of the nasal planum. Pigmentation of the nasal planum seemed to be a predisposing factor. Seven cats were diagnosed histopathologically with a malignant melanoma, three with a benign melanocytoma. One of the cats developed a lymph node metastasis despite diagnosis of a well-differentiated melanocytic neoplasia. In four cases, a pigmented mass, which was initially stable over a long time, showed a sudden rapid progression suggesting malignant transformation. Treatments included hypofractionated radiation therapy (n = 6) and surgical resection (n = 1). In three cats no further treatment was pursued. Complete (n = 3) and partial (n = 3) remissions were observed in cats treated with radiation therapy; however, all experienced tumour progression or recurrence after a short period of time. Most of the cats (n = 7) had to be euthanased due to tumour progression (median survival time: 265 days). CLINICAL SIGNIFICANCE: The present case series provides insights in clinical presentation and clinical outcomes of cats with melanocytic tumours of the nasal planum.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/33244779/