Gamma Knife is used to treat benign brain tumors

According to the National Institute of Neurological Disorders and Stroke, brain tumors are abnormal growths of tissue found inside the skull, which are the primary components of the central nervous system (CNS). Benign tumors are noncancerous and do not spread to other parts of the body. The CNS is housed within rigid, bony quarters (i.e., the skull and spinal column), so any abnormal growth, whether benign or malignant, can place pressure on sensitive tissues and impair function. Tumors that originate in the brain are called primary tumors. Most primary tumors are caused by out-of-control growth among cells that surround and support neurons. In a small number of individuals, primary tumors may result from specific genetic disease (e.g., neurofibromatosis, tuberous sclerosis) or from exposure to radiation or cancer-causing chemicals. The cause of most primary tumors remains a mystery. They are not contagious and, at this time, not preventable. Symptoms of brain tumors include:

• Headaches
• Seizures
• Nausea and vomiting
• Vision
• Hearing problems
• Behavioral and cognitive problems
• Motor problems
• Balance problems

For more information on brain tumors, visit the National Institute of Neurological Disorders and Stroke.