Retroperitoneal Sarcoma is related to sarcoma and fibrous histiocytoma. An important gene associated with Retroperitoneal Sarcoma is MDM2 (MDM2 Proto-Oncogene), and among its related pathways/superpathways are Cellular Senescence and Endometrial cancer. The drugs Ifosfamide and Palifosfamide have been mentioned in the context of this disorder. Affiliated tissues include smooth muscle and kidney, and related phenotypes are neoplasm and renal/urinary system