he percentage of retroperitoneal sarcomas (RPS) among all soft tissue sarcomas ranges from 10%-15%. Surgery remains the gold standard for RPS. In this study, we analyzed the impact of surgical treatment for primary RPS on recurrence and overall mortality at a Chinese institution and identified and evaluated prognostic variables.

Inclusion Criteria:

• The inclusion criteria were as follows: (1) diagnosis of primary retroperitoneal sarcoma, (2) pathological conformity, (3) no prior surgical resection, (4) complete clinicopathological data, and (5) age of ≥18.

Exclusion Criteria:

• Patients with benign retroperitoneal tumors, gastrointestinal stromal tumors, Ewing, desmoid-type fibromatosis, pheochromocytomas/paragangliomas, or any other subtypes other than RPS were not included. The ethics committee of the Northern Jiangsu People's Hospital approved the study.

(1) diagnosis of primary retroperitoneal sarcoma, (2) pathological conformity, (3) no prior surgical resection, (4) complete clinicopathological data, and (5) age of ≥18.