A tumor is a mass of tissue made up of cells that grow and multiply in an abnormal and uncontrolled way. The brain controls many important bodily functions; when a tumor grows into or presses on an area of the brain, it may stop that part of the brain
from functioning normally.
A tumor may be either benign (not cancerous) or malignant (cancerous); both cause symptoms that require treatment:
Brain tumors are classified as primary or secondary:
The signs and symptoms of brain tumors differ from person to person. Signs and symptoms depend on where the tumor forms in the brain, what the affected part of the brain controls, and the size of the tumor.
Consult with your doctor if you have any of the following:
Appointments and Second Opinions
The Basic Science of Brain Tumors ExplainedMikael Rinne, MD, PhD, of Dana-Farber's Center for Neuro-Oncology, discusses the science and genetics behind brain tumors.