Pelvic Undifferentiated High Grade Pleomorphic Sarcoma

**Semantic type:** Neoplastic Process

**Definition:** Undifferentiated high grade pleomorphic sarcoma involving the bones of the pelvis.

**Synonyms:** - Undifferentiated High Grade Pleomorphic Sarcoma of the Pelvis - Undifferentiated Pelvic Pleomorphic Sarcoma