The first part of this study lasts 12 months, and the levonorgestrel IUD will remain in your uterus during that time. If the disease gets worse or you experience intolerable side effects at any time, you will be taken off study and the levonorgestrel IUD will be removed. In that case, you would not need to return for the follow-up study visits described below. Instead, you would visit your primary gynecologic oncologist (your regular doctor for the disease), who will discuss with you the different treatment options for the disease.