[Local control in Ewing sarcoma. Comparative results following intralesional, marginal and tumor resection with...

According to the results obtained so far in the CESS studies there is evidently no difference, as regards the frequency of local recurrence, between patients who have been surgically treated only and those who have had surgery and subsequent radiation therapy, provided that Enneking's guidelines on tumor excision according to regions are adhered to. Generally speaking, the recommendation still applies that primary local treatment of Ewing's sarcoma should be surgical. Further follow-ups continue to be necessary to establish whether postoperative radiation can be dispensed with. Is has become clear that radiation therapy alone will result in equally good local control only with small Ewing's sarcomas which respond well to preoperative chemotherapy.