According to (Martin, E., & McFerran, T. (2014). Cerebrospinal fluid. A Dictionary of Nursing, A Dictionary of Nursing.) the cerebrospinal fluid is “the clear watery fluid that surrounds and protects the brain and spinal cord. It is contained in the subarachnoid space and circulates in the ventricles of the brain and in the central canal of the spinal cord.” usually the CSF that is produced or flowing through the fourth ventricle; which lies ventral to the cerebellum, leaves via the lateral aperture to the subarachnoid space however in the presence of a tumor the aperture is blocked so the CSF cannot leave. The compromised flow of the CSF combined with the mass of the tumor results in an increase in the intracranial pressure. This causes one
