© 2005-2012 American Society of Clinical Oncology (ASCO). All rights reserved worldwide.
Medulloblastoma is a type of brain tumor. A brain tumor begins when normal cells in the brain change and grow uncontrollably, forming a mass. A tumor can be benign (noncancerous) or malignant (cancerous, meaning it can spread to other parts of the body). Medulloblastoma is a malignant tumor.
The brain and spinal column make up the central nervous system (CNS), where all vital functions are controlled, including thought, speech, and body strength. Medulloblastoma begins in granular cells in the cerebellum (back of the brain). This is the part of the brain that controls body movement and coordination.
Find out more about basic cancer terms used in this section.
Looking for More of an Overview?
If you would like additional introductory information, explore these related items on Cancer.Net:
- Cancer.Net Patient Education Videos: View short videos led by ASCO experts in childhood cancer and brain tumors that provides basic information and areas of research.
Or, choose “Next” (below, right) to continue reading this detailed section. To select a specific topic within this section, use the icon panel located on the right side of your screen.