Localized Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor

**Semantic type:** Neoplastic Process

**Definition:** A small round cell tumor with or without neural differentiation that is confined to a specific site without evidence of spread to other anatomic sites.

**Synonyms:** - Localized Ewing's Sarcoma/Peripheral Primitive Neuroectodermal Tumor - Localized Tumors of Ewing's Family - Localized Tumors of the Ewing's Family