Neurological cancer is cancer of the brain or spine. Sometimes it affects both areas of the body at once. Brain cancer occurs when cells inside your brain reproduce uncontrollably, forming a mass. This mass, also called a tumor, can be cancerous (high grade, malignant) or noncancerous (low grade, benign).

Malignant neurological tumors can invade nearby tissue and spread to other parts of your brain. Benign tumors don’t spread, but they can still cause neurological cancer symptoms, especially if they grow to be quite large.