Recurrent ovarian endometrioma after conservative surgery:A retrospective study

Objective:To study the prevalence and associated factors of recurrent ovarian endometrioma after ovarian cystectomy.Methods:This retrospective study analyzed 303 patients who underwent cystectomy for ovarian endometrioma and had at least a 2-year follow-up at Srinagarind Hospital from January 2013 to December 2018.The patients were divided into the recurrent and nonrecurrent groups according to the findings from postoperative transvaginal ultrasonography 6 months after undergoing surgery.Nineteen factors were collected for risk evaluation.The prevalence of recurrent ovarian endometrioma and its 95%confident interval(CI)were calculated.Univariate and multivariable logistic regression analyses were performed to determine the association between factors and recurrence.Results:Recurrent ovarian endometrioma occurred in 33%(95%CI 27.7%-38.3%)patients.The median duration of followup was 36 months.during the median follow-up period of 36 months.Preoperative history of parity,preoperative infertility history,endometriosis surgery,moderate to severe dysmenorrhea,dyspareunia,intraoperative stage 4 according to revised American Society for Reproductive Medicine classification,presence of adenomyosis,and postoperative pain relief were associated factors based on univariate analysis.In contrast,infertility[odds ratio(OR)2.22,95%CI 1.14-4.33],moderate to severe dysmenorrhea(OR 2.13,95%CI 1.09-4.15),and postoperative pelvic pain relief(OR 0.22,95%CI 0.12-0.42)were independently associated factors based on multivariable logistic regression analysis.Conclusions:In our setting,preoperative infertility history and moderate to severe dysmenorrhea were associated with a higher recurrent ovarian endometrioma risk.In contrast,postoperative pain relief was significantly associated with lower recurrence risk.