RESUMEN
BACKGROUND: In women with recurrent disease who were conservatively treated for atypical endometrial hyperplasia (AEH) and early endometrial carcinoma (EEC), the reasons why conservative treatment was chosen persist and outcomes of performing a conservative re-treatment are unclear, as pooled estimates on oncologic outcomes of such a re-treatment are lacking. OBJECTIVES: To provide pooled estimates of oncologic outcomes of conservative re-treatment in women with recurrent AEH or EC. SEARCH STRATEGY: A systematic review and meta-analysis was performed by searching six electronic databases from their inception to March 2022. SELECTION CRITERIA: Studies that allowed extraction of data about oncologic outcomes of conservative re-treatment of women with recurrent AEH and EEC after a conservative treatment. DATA COLLECTION AND ANALYSIS: Pooled prevalence of complete response (CR), poor response (PR), and recurrence after conservative re-treatment was calculated. MAIN RESULTS: Fifteen studies (12 retrospective and 3 prospective) with 492 women (42.1% AEH and 57.9% EEC) were included in the systematic review, and 10 studies (8 retrospective and 2 prospective) were suitable for the meta-analysis. Pooled prevalence was 85.3% (95% confidence interval [CI] 77.0%-91.0%) for CR, 14.7% (95% CI 9.0%-23.0%) for PR, and 40.4% (95% CI 15.5%-71.4%) for recurrence. CONCLUSIONS: Conservative re-treatment in AEH or EC recurrent women has a high CR rate and acceptable recurrence rate that might allow it to be considered a safe and viable option, at least as a first round of conservative treatment. Women with an unsatisfied desire for motherhood or with high surgical risk might avoid hysterectomy and attempt childbearing or spare high-risk surgery.