Most common site of medulloblastoma is
Medulloblastoma is a cancerous tumor--also called cerebellar primitive neuroectodermal tumor (PNET)--that stas in the region of the brain at the base of the skull, called the posterior fossa. These tumors tend to spread to other pas of the brain and to the spinal cord. Refer Robbins page no 1312
Medulla
Cerebellum
Cerebrum
Pineal gland
Nervous system