Today, nearly 700,000 people in the U.S. are living with a brain tumor, and yet, when it comes to pinpointing causes or risk factors, scientists are still searching for answers.

The word, 'Brain Tumor,' describe a number of different forms of tumors which span the range of behaviors of tumors as well; both benign and malignant. There are different ways to classify Brain Tumors too. Perhaps the most common way to classify Brain Tumors is by the cells in which they originate.