Medulloblastomas are a type of brain tumor that primarily affect children, although they can also occur in adults. These tumors are classified as primitive neuroectodermal tumors (PNETs) and originate in the cerebellum, the part of the brain responsible for coordination and balance. Medulloblastomas are highly malignant and can spread to other parts of the brain and spinal cord through the cerebrospinal fluid.
