The Mechanism of Single Progesterone as Add-Back Therapy to GnRH-a Administration

Abstract

Endometriosis (EMS) is a common estrogen-dependent gynecological disorder, which affects quality of life and fertility of productive-aged women [1]. Current treatment of EMS is mainly based on surgery and post-operative maintenance treatment of ovarian suppressive agents. A major challenge for women with EMS is the post-operative recurrence [2-3]. Some medical treatments have been suggested for EMS, such as oral contraceptive pills, and gonadotropin-releasing hormone agonists (GnRH-a). GnRH-a is an important treatment modality for EMS, significantly reducing EMSrelated symptoms [4-6].