Article Evaluation of treatment strategies and prognostic factors of 135 patients with low-grade endometrial stromal sarcoma

Background: To evaluate the influence of treatment modalities and prognostic factors on the survival of patients with low-grade endometrial stromal sarcoma (LGESS). Methods: One hundred and thirty-five LGESS patients in Fudan University Shanghai Cancer Center from January 2006 to December 2018 were retrospectively reviewed. Results: Two patients received fertility-sparing surgery while 133 patients received hysterectomy. The median follow-up duration was 52 months (3–342 months). One hundred and nine (80.7%) patients received ovariectomy, 73 (54.1%) patients had lymphadenectomy, 83 (61.5%) patients received adjuvant therapy. The 5-year and 10-year disease free survival rates were 72.0% and 61.0%, respectively. The 5-year and 10-year overall survival rates were 88.0% and 79.8%, respectively. Surgery for recurrence was associated with improved overall survival although the complication rate was about 27.6%. Multivariate analysis showed that lymphovascular invasion was associated with disease free survival (hazard ratio, 0.473; 95 % confidence interval, 0.235–0.952; p=0.036) and menopausal status was related to overall survival (hazard ratio, 5.561; 95 % confidence interval, 1.400–22.084; p=0.015). Conclusions: There was no effect of lymphadenectomy, ovariectomy, or adjuvant therapy on patients’ recurrence and survival. Hysterectomy may be proposed as the standard treatment for LGESS. Surgery for replase was an acceptable method to improve overall survival. Lymphovascular invasion was a significant independent factor for disease free survival. Postmenopause was the poor prognostic factor for overall survival.