According to the latest WHO data published in 2020, deaths from Ovarian Cancer in Algeria reached 611 or 0.33% of total deaths. Clinically, the ovarian tumor is often cystic but due to the deep location of the ovaries it can reach a significant volume before causing symptoms which can be very varied and are never specific. Ultrasound must be considered as a true extension of the clinical examination. Performed by the suprapubic route with a full bladder and by the transvaginal route with an empty bladder, it must be supplemented at the abdominal and retroperitoneal levels and can benefit from the contribution of color Doppler ultrasound. It is recommended that suspicious adnexal masses or ovarian tumors apparently in early stages be preferentially managed by oncological surgical teams trained in this pathology. Chemotherapy is a weapon that can be used as a first aid in advanced stages or as an adjuvant after a surgical procedure. The aim of our article is to illustrate existing therapies for these malignant tumors.