Brain cancer is a disease in which cells within the brain develop and form a mass which interferes with the overall performance of the mind such as muscle control, feeling, memory and these other functions which help you regulate your entire body. Tumors that comprise of cancerous cells spread to other areas of the brain. These are known as malignant tumors. These tumors which are cancerous, don't spread and are essentially localized. Primary tumors are the ones which grow from the cells. Second...