Influence of different treatment modalities on survival of patients with low-grade endometrial stromal sarcoma: A retrospective cohort study

Background: To assess the efficacy of different treatment modalities on the outcome of patients with low-grade endometrial stromal sarcoma (LG-ESS). Methods: Patients with LG-ESS who received hysterectomy from March 1991 to December 2013 were retrospectively analyzed. The associations between clinicopathologic variables and disease free survival (DFS) were evaluated. Results: One hundred and fourteen patients met the eligibility requirements. All patients received hysterectomy as the main treatment, 17.5% (20/114) of patients received ovarian preservation, and 62.3% (71/114) of patients received lymphadenectomy. Fifty-six patients received chemotherapy, 36 patients received radiotherapy, and 11 patients received endocrine therapy. The median follow-up duration was 40 months. The 5-year and 10-year DFS rates were 91.8% and 77.4%, respectively. The 5-year and 10-year overall survival rates were 96.7% and 96.7%, respectively. Univariate analyses showed that there were no risk factors associated with DFS. Lymphadenectomy, lymph node status, ovarian preservation, chemotherapy, radiotherapy, and endocrine therapy had no significant effect on DFS. Conclusions: Hysterectomy has been the mainstay of treatment for LG-ESS. The optimal treatment strategy in LG-ESS remains to be determined. (C) 2015 IJS Publishing Group Limited. Published by Elsevier Ltd. All rights reserved.