Intra-Axial Tumors : . Gliomas : One of the most common types of primary brain tumors arising from the brain tissue itself, gliomas arise from the supporting cells of the brain, the glial cells. Astrocytoma : The most common form of glioma , arising from astrocytes .
Astrocytoma: The most common form of glioma, arising from astrocytes.
Ependymoma: From the cells lining the ventricles in the brain.
GlioblastomaMultiforme (AKA grade IV glioma, malignant glioma): The most aggressive form of glioma.