You will only be asked to participate in this study if you have a documented mass or tumor in your ovarian area. The Ciphergen OvaR1 assay is a proteomics-based blood test that assists the physician to determine whether the documented tumor is cancer or benign (non-cancer). This is not a necessary part of your treatment. You are already scheduled to have an operation to remove this tumor, which makes you eligible for this trial. If you agree to participate you will be one of up to 1000 people to do so.