A medulloblastoma is a type of brain tumour which is rare in adults, but more common in children. This information is about medulloblastoma in adults. If you need information about medulloblastoma in children you can contact the Children’s Cancer and Leukaemia Group.
This information should be read with our general information about brain tumours. We hope it answers your questions. If you have any further questions, you can ask your doctor or nurse at the hospital where you are having treatment.
Medulloblastoma is a primitive neuroectodermal tumour (PNET). These tumours develop from poorly developed cells at a very early stage of their life.
Medulloblastoma usually happens in people under 45. They start in the cerebellum. They may sometimes spread to other parts of the brain or to the spinal cord, usually through the cerebrospinal fluid (CSF). CSF is the fluid that surrounds and protects the brain and the spinal cord. It’s very rare for medulloblastomas to spread to any other parts of the body.