Central Nervous System Dedifferentiated Solitary Fibrous Tumor

**Semantic type:** Neoplastic Process

**Definition:** A central nervous system solitary fibrous tumor characterized by the presence of areas of abrupt transition to high grade sarcoma.

**Synonyms:** - CNS Anaplastic Solitary Fibrous Tumor - CNS Dedifferentiated Solitary Fibrous Tumor - Central Nervous System Anaplastic Solitary Fibrous Tumor