Benign ovarian cysts are frequent during women's life. They are diagnosed with pelvic pain or fortuitously during an ultra-sonographic exam. In case of persistence,a surgery will be necessary to identify the nature of the cyst and assess its benignity. In some case, cysts are recurrent and multiple surgeries are needed leading to a significant risk of ovarian damage by follicular depletion. Oocyte cryopreservation is no longer considered as an experimental technique of Fertility Preservation since 2013 as it has been recognized to be efficient and safe. According to reproductive medicine scientific committees and the French ethic law, fertility preservation has to be proposed in every situation of infertility risk. To date, there is no cohort study dedicated to fertility preservation by oocyte freezing in this specific subgroup of patients. The purpose of the study is to prospectively evaluate the oocyte number and quality after controlled ovarian hyperstimulation in patients with recurrent ovarian cysts.

Inclusion Criteria:

• women with benign ovarian tumor with high risk of recurrence, i-e, endometrioma, dermoid cysts or mucinous cysts.
• women with previous surgery and/or high risk of ovarian damage: bilateral cysts, cyst diameter higher than 5 cms
• Having a social insurance
• Able to give an informed consent

Exclusion Criteria:

• Borderline tumors
• Undetectable AMH levels
• Personal history of thrombo-embolic events
• pregnancy

young women

Young women with benign ovarian tumors and high risk of further infertility due to surgery