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Hemangiosarcoma of the third eyelid in a cat
Domenico Multari1, Marta Vascellari, Franco Mutinelli
1Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padova, Italy.
Veterinary Ophthalmology
|November 26, 2002
Summary
This case report details the first known instance of conjunctival hemangiosarcoma affecting the third eyelid in a cat. Successful surgical and cryotherapy treatment led to no recurrence after seven months.
Area of Science:
- Veterinary Ophthalmology
- Comparative Pathology
- Oncology
Background:
- Hemangiosarcoma is an aggressive vascular tumor rarely reported in feline ocular structures.
- The third eyelid (nictitating membrane) is a less common site for tumor development in cats.
Observation:
- A 15-year-old Domestic Short-haired cat presented with a small, red mass on the anterior surface of its left third eyelid.
- Initial examination revealed mild conjunctivitis and nuclear sclerosis, with the mass located beneath the conjunctival epithelium.
Findings:
- Histopathology confirmed conjunctival hemangiosarcoma, characterized by pleomorphic spindle and polygonal cells with vascular differentiation.
- Moderate mitotic activity with atypical mitoses indicated aggressive tumor potential.
Implications:
- This report establishes conjunctival hemangiosarcoma as a distinct entity affecting the feline third eyelid.
- Early diagnosis and combined therapeutic approaches (surgery and cryotherapy) may offer a favorable prognosis for feline ocular hemangiosarcoma.