Low Grade Glioma

**Semantic type:** Neoplastic Process

**Definition:** A grade I or grade II glioma arising from the central nervous system. This category includes pilocytic astrocytoma, diffuse astrocytoma, subependymal giant cell astrocytoma, ependymoma, oligodendroglioma, oligoastrocytoma, and angiocentric glioma.

**Synonyms:** - CNS, low grade glioma (LGG) - LGG - Low Grade Glial Neoplasm - Low-Grade Glioma