The Effect of Medical Management Following Excisional Surgery for Endometriosis: A Randomized Controlled Trial

Inclusion criteria * Age ≥ 18 years * Planning to undergo an elective laparoscopic or robotic procedure for known or suspected endometriosis Exclusion criteria -A known contraindication to REL-CT. Contraindications include: * High risk of arterial, venous thrombotic, or thromboembolic disorder * Pregnancy Known osteoporosis * Current or history of breast cancer or other hormone-sensitive malignancies * Known hepatic impairment or disease * Undiagnosed abnormal uterine bleeding * Known hypersensitivity to components of Rel-CT * The patient did not discontinue hormonal suppression within the required timeline: Trans-Dermal, Oral Medication, Patch, or Vaginal Ring: day before surgery Intrauterine Device or Sub-Dermal Implant: removed at surgery Injectable Medication: at least 12 weeks before surgery * Primary language other than English/Spanish * Interested in pregnancy within the 6 months following the surgical procedure. * If pregnancy test performed during pre-surgical work up is positive, the patient will no longer be a candidate for endometriosis surgery and will therefore not be eligible for the study. * Patients without histologic evidence of endometriosis following their surgical procedure will be removed from the study prior to receiving the study intervention. * Patients who undergo a surgical intervention more invasive than the planned laparoscopic or robotic excisional surgery, such as open abdominal surgical repair, will be removed from the study prior to receiving the study intervention.