This study is exploratory in nature and is designed to be hypothesis generating to support the design of future studies. Women diagnosed with a pelvic mass (ovarian, uterine, retroperitoneal, etc.) who are scheduled for an imaging guided biopsy, surgical biopsy or surgical excision for evaluation of their pelvic mass. It is estimated that approximately 200 women will be enrolled for evaluation of the primary and exploratory endpoints. Enrollment into the study will continue beyond 200 women if necessary to obtain a minimum of 50 evaluable women with a histopathologically confirmed malignancy, including ovarian, fallopian, peritoneal, endometrial, cervical, etc.