Endometriosis Ovary

Endometrioma's prevalence is between 23 and 55%. It causes pelvic pain, decrease fertility and ovarian reserve. Currently, there's no recommendation about large endometrioma's treatment and there's no information on the best treatment to limit recurrences, preserve fertility and ovarian reserve. In Lille university hospital, simple laparoscopic drainage associated with hormonal therapy is practiced to reduce the risk of cystectomy. This protocol will be evaluated with an observational and prospective study, including women of childbearing age having endometrioma measuring 6 cm or above. The aim of this study is to assess if cyst drainage associated with GnRH agonist, could decrease endometrioma recurrences, deleterious effect on ovarian reserve and evaluate impact on anti-mullerian hormone

To study which surgical technique offers better results in treating endometriomas in terms of ovarian reserve preservation. The 2 conservatives techniques used are: 1. The combined technique 2. CO2 laser vaporization only Ovarian reserve will be assessed by consecutive measurements of AMH serum levels before and after surgery.