Recruiting Preoperative Ultra-hypofractionated Radiotherapy Followed by Surgery for Retroperitoneal Sarcoma (FUSION-01) NCT05224934 Conditions Neoplasms, Neoplasms by Histologic Type, Neoplasms, Connective and Soft Tissue, +8 more Locations Radiotherapy Department of Cancer Hospital, Chinese Academy of Medical Sciences — Beijing, Beijing Municipality, China View Trial Details