Reccurence of ovarian endometriotic cyst after cystectomy

Objective: To evaluate risk factors which are associated with recurrence of endometriotic cysts after cystectomy.Method: Fifty-seven patients who had a minimum of 6 months of observation after cystectomies for endometriotic cyst were studied retrospectively. Recurrence was defined as the presence of an endometriotic cyst > 2 cm in size on transvaginal ultrasonogram during the post-operative follow-up period. We evaluated nine variables (age, laparoscopic surgery/laparotomy, size of the largest cyst, laterality, findings of transvaginal ultrasonogram, serum CA-125 levels, revised American Society for Reproductive Medicine [r-ASRM] classification, and pre- and post-operative medical treatment) to assess the effects on the recurrence using logistic regression analysis.Result: The overall rate of recurrence was 17.5% (10/57). The cumulative rate of recurrence over 60 months was 32.1%. Laparoscopic treatment had a higher recurrence rate than laparotomy (p<0.05).The statistically significant factor that was associated with a higher recurrence rate was pre-operative medical treatment (p=0.02).Conclusion: Pre-operative medical treatment of endometriotic cysts is associated with a higher recurrence rate after cystectomy.