Localized Childhood Undifferentiated High Grade Pleomorphic Sarcoma of Bone

**Semantic type:** Neoplastic Process

**Definition:** An undifferentiated high-grade pleomorphic sarcoma of bone that occurs in childhood and has not spread to other anatomic sites.

**Synonyms:** - Localized Childhood Undifferentiated High Grade Pleomorphic Sarcoma - Localized Childhood Undifferentiated High-Grade Pleomorphic Sarcoma of Bone - Undifferentiated High Grade Pleomorphic Sarcoma of Bone