Peer-reviewed veterinary case report
Cat with eyelid lump diagnosed as myxosarcoma tumor
By Araújo, Rosélia L S et al.·Published in Veterinary ophthalmology·2025·College of Agronomy and Veterinary Medicine, Brazil·View original on PubMed →
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Original publication title: Presumed myxosarcoma in the eyelid of a cat: Case report.
- Species:
- cat
Plain-English summary
An 11-year-old mixed-breed female cat had a soft, non-ulcerated lump about the size of a marble on her lower eyelid. After a biopsy, the vet suspected it could be a type of tumor called myxosarcoma, which is a cancer that can occur in soft tissues. To ensure all the cancer was removed, the vet performed surgery to take out the cat's right eyeball. Further tests confirmed the diagnosis of myxosarcoma. The cat's condition highlights the importance of checking eyelid lumps in pets, as they can be serious.
People also search for: cat eyelid lump · myxosarcoma in cats · cat eye tumor treatment
Abstract
OBJECTIVE: To describe the clinical and pathological characteristics of a neoformation suggestive of myxosarcoma in a cat's eyelid. ANIMAL STUDIED: An 11-year-old mixed-breed castrated female cat presented with a nodule on the lower eyelid approximately 1.6 cm in diameter, multilobulated, non-ulcerated, soft, and adhered to both the skin and conjunctiva of the lower eyelid. PROCEDURES: The incisional biopsy revealed findings suggestive of a peripheral nerve sheath tumor. After performing an exenteration of the right eyeball to ensure a safe surgical margin, the tissue samples were sent for histopathological analysis and later for immunohistochemistry. RESULTS: Microscopic evaluation classified the mass as a grade-I mesenchymal neoplasm, suggesting myxosarcoma and malignant peripheral nerve sheath tumor as differential diagnoses. An immunohistochemical examination was carried out to differentiate the neoplasm. Once tumors of neural origin were excluded, the diagnosis of myxosarcoma was indicated as the most likely. CONCLUSION: We report a presumed case of eyelid myxosarcoma in a cat, highlighting its relevance in the differential diagnosis in the evaluation of eyelid and conjunctival neoplasms in cats.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39034454/