The goal of postoperative treatment in adult soft tissue sarcoma is local control, and in high-risk patients prevention of distant failures. Radiation therapy is essential after non-radical surgery. The role of adjuvant chemotherapy on improvement of overall survival remains to be evidenced; however, recent meta-analysis data have confirmed its impact on both local and metastatic evolution of the disease. Because for both radiotherapy and chemotherapy, delay of treatment may be crucial for efficacy following tumor excision, concomitant radiochemotherapy should be considered. Review of the literature as well as personal results showed the feasibility of postoperative radiochemotherapy in adult soft tissue sarcoma, even when the chemotherapeutic associations used included an anthracycline. Prospective study of radiochemotherapy should be performed in order to assess its real impact in terms of efficacy and toxicity.