A brain tumor is a growth of cells in the brain that multiplies in an abnormal, uncontrollable way. It can either be cancerous (malignant) or non-cancerous (benign). Brain tumors are graded from 1 to 4 according to their behavior, such as how fast they grow and how likely they are to grow back after treatment. For more grade information, please visit www.emedicinehealth.com.
Brain tumors vary in their growth rate and ability to cause symptoms. Symptoms include new or increasingly strong headaches, blurred vision, loss of balance, confusion, and seizures. In some cases, there may be no symptoms.