The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.

Purpose of This PDQ Summary

Added this new section.

General Information

This section was renamed from General Information About This PDQ Summary.

The subsection Origin and Incidence of Ewing Family of Tumors was renamed from General Information About Ewing Family of Tumors.

Added text to state that classic Ewing sarcoma, primitive neuroectodermal tumor, Askin tumor (chest wall), and extraosseous Ewing sarcoma are all derived from the same primordial stem cell.

Added Rodriguez-Galindo et al. as reference 9.

Added text to state that female gender and younger age predict for a good histologic response to preoperative therapy (cited Ferrari et al. as reference 23).

Ewing Tumor of Bone: Localized Tumors

Added text to state that for patients with residual disease following attempt at surgical resection, the IESS recommends 45 Gy to the original disease site plus a 10.8 Gy boost for patients with gross residual disease.

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