LAPAROSCOPIC OVARIECTOMY IN 2 HORSES WITH GRANULOSA-CELL TUMORS

Two mares were admitted for ovariectomy of unilateral granulosa cell t umors. Both mares were ovariectomized (1 unilateral and 1 bilateral) b y use of a ventral abdominal laparoscopic technique. This approach req uired tilting the operative table 30 degrees to elevate the pelvis and to allow observation of the ovaries. Using a single laparoscopic port al and 3 to 4 instrument portals, a triangulation technique was used. The ovarian pedicles were isolated and secured via loop ligation. The ovaries then were divided from the ligated pedicle and placed within s pecimen bags for extraction. The specimen bags then were removed throu gh a ventral midline celiotomy. Using this technique, it was determine d that granulosa cell tumors or ovaries of up to 20 cm in diameter can be removed. Laparoscopic ovariectomy provided a means to provide tens ion-free dissection and ligation of the ovarian pedicle. In comparison to conventional techniques, this may improve suture security and redu ce complications related to excessive pedicle tension. Improved observ ation during surgery, less pedicle tension, and minimal invasiveness m ade laparoscopic ovariectomy of these 2 mares advantageous.