Childhood Undifferentiated High Grade Pleomorphic Sarcoma of Bone

**Semantic type:** Neoplastic Process

**Definition:** An undifferentiated high-grade pleomorphic sarcoma that arises from the bone and occurs during childhood.

**Synonyms:** - Childhood Malignant Fibrous Histiocytoma of Bone - Childhood Undifferentiated High Grade Pleomorphic Sarcoma - Childhood Undifferentiated High-Grade Pleomorphic Sarcoma of Bone - Undifferentiated High Grade Pleomorphic Sarcoma of Bone