Gliomas are malignant tumors that start in the brain. Graded on a scale from 1-4, the most aggressive tumors are Grade 4 and are referred to as Glioblastoma Multiforme. In this video, Neurosurgeon Gail Rosseau, MD discusses the signs and symptoms of these tumors, as well as their diagnosis and treatment. For more information, visit http://www.northshore.org
