Preoperative radiotherapy plus surgery versus surgery alone for patients with primary retroperitoneal sarcoma (EORTC-62092: STRASS): a multicentre, open-label, randomised, phase 3 trial
EORTC-62092 is an open-label, randomized, phase 3 study done in 31 research institutions, hospitals, and cancer centers in 13 countries in Europe and North America. Adults with a primary retroperitoneal sarcoma that was operable and suitable for radiotherapy who had not been previously treated were randomly assigned to receive surgery alone or preoperative radiotherapy followed by surgery
