HOME > Information > Brain Cancer > Educational Resources. Brain Tumors. What is a brain tumor? A brain tumor is an abnormal growth of tissue in the brain. ... READ MORE cancer.stanford.edu/braincancer/brain
A 'brain tumor' is any mass created by an abnormal and uncontrolled growth of cells either found in the brain (neurons, glial cells, epithelial cells, myelin producing cells, "etc" ... READ MORE http://en.wikipedia.org/wiki/Brain_tumor