Abstract
The role of radiotherapy and adjuvant chemotherapy in the primary treatment of osteogenic sarcomas and of Ewing's sarcoma is reviewed. In osteosarcoma radiotherapy can take the form of prophylactic total irradiation of the lung, but preoperative irradiation of the primary tumor has not proved successful. On the other hand, in Ewing's sarcoma primary and local irradiation is the therapy of choice, and is followed by adjuvant polychemotherapy over a long period.
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