The study population includes those women that are scheduled for a pathological or cytological confirmation either by a surgical procedure (laparoscopy/laparotomy) or any kind of biopsy or cytology, prior to any anti-cancer treatment and aged matched controls. The clinical suspicion includes one of the following: Pelvic mass/cyst (by pelvic examination and/or imaging techniques), and/or high CA-125 levels, and/or ascites, and/or due to incidental finding of distant metastasis. Final verification ("true positive" or "true negative") will be done in relation to pathology/cytology results only or for healthy women in relation to clinical history.