GnRH Antagonist Pre-treatment in the Early Follicular Phase for Resolution of a Baseline Functional Ovarian Cyst

In this study we would like to examine the effect of GnRH antagonist administration at the beginning of the follicular phase in patient presenting with a simple ovarian cyst 25-50 mm. The aim of this intervention is to allow a spontaneous regression of the ovarian cyst (if in nature) while ensuring a pituitary downregulation to prevent the beginning of a leading follicle recruitment. As previous studies using GnRH antagonist pre-treatment prior to GT initiation for other purposes demonstrated positive results (including different patient population) , no deleterious effects are expected.