Malignant Brain Glioma

**Semantic type:** Neoplastic Process

**Definition:** A grade 3 or 4 glioma that arises from the brain. This category includes anaplastic astrocytoma, anaplastic ependymoma, anaplastic oligoastrocytoma, anaplastic oligodendroglioma, anaplastic pleomorphic xanthoastrocytoma (all grade 3 gliomas), and glioblastoma (grade 4 glioma).

**Synonyms:** - Brain High Grade Glioma - Brain High-Grade Glioma - Brain Malignant Glioma - High Grade Brain Glioma - High-Grade Brain Glioma