Pilocytic astrocytoma, the most common glial cell tumor frequently occurs in children and young adults. Location-wise, they occur in or near the midline, usually from the cerebellum, optic nerve, chiasm, hypothalamus, and optic radiations. In adults as in this case, they occur commonly in the cerebral hemispheres. Other less common locations include the cerebral ventricles, brain stem, velum interpositum, and spinal cord.