Few cases of intraoperative or postoperative complications associated with laparoscopic adnexal surgery have been reported in the literature. We describe a case of laparoscopic abdominal vascular injury and persistent bleeding in the matrix of the ovary following laparoscopic cystectomy. During the first postsurgical day, the patient was syncopal. The physical examination showed a vulvar hematoma and minimal bleeding from a laparoscopic incision in the abdominal wall. Vulvar hematoma and an unstable patient may signal serious vascular bleeding.