Co-existing squamous cell carcinoma and hemangioma on the ocular surface of a cat.
A 14-year-old spayed female domestic short-haired cat was presented for evaluation of a mass in the right eye. Ophthalmic examination revealed a blind right eye and presence of two distinct masses: a pink and a red-to-brown mass, the latter occupying most of the cornea and part of the conjunctiva. Exenteration was performed under general anesthesia, and the ocular tissues were processed routinely for histopathology. Upon microscopic examination, a malignant epithelial neoplasm and a benign vascular neoplasm were present in the cornea. The conjunctiva and the third eyelid were also affected. Upon immunohistochemistry, the epithelial tumor was positive for cytokeratin and negative for vimentin and the endothelial tumor was negative for cytokeratin and positive for vimentin. A diagnosis of squamous cell carcinoma (SCC) and hemangioma was made. The SCC was affecting the cornea, bulbar conjunctiva (lateral and inferior) and the base of the third eyelid, whereas the hemangioma was affecting the cornea and medial limbus. To the authors' knowledge, this is the first report of concomitant SCC and hemangioma affecting the ocular surface in a cat.
Perlmann
Eduardo
E
Laboratory of Investigation on Comparative Ophthalmology, School of Veterinary Medicine, University of São Paulo, São Paulo 05508 270, SP, Brazil. perlmann@ig.com.br
da Silva
Enry Garcia
EG
Guedes
Pedro Mancini
PM
Barros
Paulo Sergio de Moraes
PS
D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D002371:Cat Diseases / Q000175:diagnosis / Q000473:pathology*; D002415:Cats; D005134:Eye Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D005260:Female; D006391:Hemangioma / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*