Pigmented squamous cell carcinoma of the conjunctiva of a horse.
Abstract A heavily pigmented tumor was removed from the lateral, perilimbal, bulbar conjunctiva of a bay Thoroughbred horse. Excision was incomplete and the base of the tumor was lasered on the assumption that the tumor was a melanoma. No other ophthalmic lesions were seen. Histology showed the mass to be a pigmented squamous cell carcinoma (SCC). The prognosis and recommended treatment protocols are different for SCC and melanoma. This is, to the best of our knowledge, the first report of an ocular, pigmented SCC in the veterinary literature.
McCowan
Christina
C
Department of Veterinary Pathology, School of Veterinary Sciences, University of Melbourne, Werribee, Australia. robin_stanley_aec@bigpond.com
Stanley
Robin G
RG
D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D003230:Conjunctival Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D006734:Horse Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006736:Horses