The purpose of this study is to see if mifepristone prevents worsening of your cancer. Mifepristone is an antiprogesterone agent, a drug which blocks female hormones, that is commonly used for the termination of pregnancies. It has not been approved by the Food and Drug Administration for use in the treatment of cancer. It is unlicensed in the United States for your condition. However, previous work has indicated that mifepristone may be useful due to how it works. It is being made available for use in the United States for compassionate use through the Feminist Majority Foundation.