Many studies have been performed looking into the risk of leaving the uterus behind. So long as the ovaries are fully removed, there is no benefit to the patient of removing the uterus. In order to develop pyometra, hormones are required, which come from the ovaries. Therefore, without ovaries, it is not possible to develop these conditions. If we see that the uterus looks abnormal during the procedure, we may be able to remove it laparoscopically or may advise converting to open surgery to do so.