Epithelioid sarcoma: A single-institutional retrospective cohort study of 36 cases.

Background: Few studies have focused on the correlation between the clinical variables and the survival in Epithelioid Sarcoma (ES). The aim of this study was to investigate the relevant clinical variables influencing the survival of ES patients.
Methods: From March 2000 to April 2018, 36 patients (median age, 38 years, range 22-61 years) with ES were evaluated, treated, and followed up.
Results: All 36 patients underwent resection in our hospital. Among them, the 2 and 5 years local recurrence rates were 32.0% and 45.1%, respectively, with a better prognosis in patients with R0 resection margin. Distant metastasis rates for the 33 patients with M0 after 2 and 5 years were 51.5% and 70.8%, respectively. Overall survival rates at 2 and 5 years for 36 patients were 74.8% and 43.3%, respectively. Tumor size (>5 cm) and M1 were significantly associated with a poor overall survival. But the R0 resection margin was the only prognostic factor for influencing the LRFS and DMFS.
Conclusions: The R0 resection margin and small tumor size were critical for a better prognosis.