Abstract

QUEVEDO DMV, ESP. MSC, PHD, Darío Alejandro Cedeño; OLIVA MVZ, MSC, PHD, Carlos Alfredo Calpa; TUPAZ EST MV, Dayana Verónica Córdoba  and  RUIZ EST MV, Andres Felipe Ibarra. Surgical treatment in the development stages of bovine ocular squamous cell carcinoma in the high tropic of Nariño department. Ces. Med. Vet. Zootec. [online]. 2019, vol.14, n.3, pp.98-109. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.14.3.8.

Squamous ocular cell ocular carcinoma (SOCC) is one of the most common and important ocular neoplasms of frequent occurrence in cattle. The objective of the work was to evaluate the surgical treatment in stages 1, 2, 3 and 4. Four presentations of the SOCC were evidenced; in the sclerocórneal limb, eyelids, córnea and in the nictitating membrane. For each clinical case, a blocking and surgical technique was performed. In all cases, a sedation dose was administered to keep the animal standing, using 2% Xylazine, a dose of 0.015-0.03 mg/kg IV in the coccygeal vein. In cases of SOCC in the third eyelid, the atriopalpebral, zygomatic and intratrochlear nerves were blocked, in cases of eyelids and conjunctiva depending on the site, the corresponding nerve was blocked. For orbital exenteration, in addition to the blockage of the four points, it is anesthetized behind the eyeball with the retrobulbar technique, administering 10-15 cc of 2% lidocaine. In cases of SOCC in the fourth stage where the eyeball and adjacent tissues are involved, orbital exenteration was performed. The carcinoma on the nictitating membrane, resection was performed, in the córnea, a superficial keratectomy and in the lower eyelid, a blepharoplasty. Twenty-five cows, Holstein, Normando, Holstein x Simental and Montbeliarde were surgically treated. The nictitating membrane was removed in 14 cases, orbital exenteration in nine, superficial keratectomy and blepharoplasty in inferior eyelid in a single case respectively. Recurrence occurred in two cases that were culled. Early surgical treatment helps control SOCC allowing animals to remain in the herd during their productive life.

Keywords : blepharoplasty; keratectomy; neural block; orbital exenteration..

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