Reported is a case of a 43 year-old Gravida 3 Para 3 (3003) admitted due to progressive abdominal enlargement, weight loss and dyspnea. Admitting Impression was Ovarian New Growth, bilateral, malignant, with secondary Pleural Effusion. She underwent Total Abdominal Hysterectomy, with Bilateral Salpingooophorectomy, bilateral lymph node dissection, peritoneal fluid cytology, and infracolic omentectomy. Histopathology report showed a Malignant Mixed Mullerian Tumor of both ovaries with metastasis to the colorectal serosa. It is noteworthy that the patient has two siblings who succumbed to advanced stage ovarian cancer. This case report will discuss the possible hereditary genetic mutations involved in the development of familialovarian carcinoma.