Postoperative Hormonal Therapy and Recurrence After Surgery for Ovarian Endometrioma

Inclusion Criteria: * Female patients who underwent conservative surgery for ovarian endometrioma at the study center. * Initiation of one postoperative hormonal regimen within 1 month after surgery. * Continuous use of the same single hormonal regimen for at least 6 months after surgery. * Availability of clinical records and postoperative follow-up data for assessment of study outcomes. Exclusion Criteria: * Failure to initiate postoperative hormonal therapy within 1 month after surgery. * Discontinuation of the postoperative hormonal regimen before 6 months. * Use of sequential or multiple postoperative hormonal therapies during the initial treatment period. * Incomplete clinical records or insufficient follow-up data for evaluation of recurrence.