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Ocular lesions in horses with lymphosarcoma: 21 cases (1977-1997)
1Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401, USA.
Objective:
To determine the most common ocular lesions in horses with lymphosarcoma.
Design:
Retrospective study.
Animals:
79 horses histologically confirmed to have lymphosarcoma.
Procedure:
Ophthalmic examinations were performed by a single individual.
Results:
21 of 79 horses had lesions involving the eye or ocular adnexa. Infiltration of the palpebral conjunctiva and eyelids was the most common lesion (n = 11). Other lesions included uveitis (n = 4), corneoscleral masses (2), third eyelid masses (2), and diffuse retrobulbar infiltrates (2).
Clinical Implications:
In horses with lymphosarcoma, ocular lesions may precede or be more obvious than lymph node enlargement or signs of visceral involvement. Early recognition of ocular lesions suggestive of lymphosarcoma may allow a more rapid diagnosis of lymphosarcoma in horses.
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