SKELETAL AND SOFT TISSUE EWING’S SARCOMA: IS THERE A DIFFERENCE?

Abstract

Between 1975 and 2000, we treated 404 patients with Ewings sarcoma; 350 had osseous and 54 had extraosseous forms. The 5 year survival for osseous was 65%, and for extraosseous, 63%. There was a statistically significant difference in the average age of the 2 groups. However, there was no difference in the prognosis with regard initial blood results, excision margin, response to chemotherapy, or the presence of metastases at diagnosis. The overall rate of metastases was the same in both groups. We would therefore suggest that both osseous and extraosseous Ewings sarcoma are manifestations of the same disease.