What is the common type of tumor found in the cerebellum?

Medulloblastoma is the most common type of tumor found in the cerebellum, particularly in children. It originates from the cerebellar vermis and is classified as a primitive neuroectodermal tumor (PNET). Medulloblastoma typically presents with symptoms such as ataxia, headaches, vomiting, and increased intracranial pressure due to obstruction of cerebrospinal fluid (CSF) flow.

The prognosis and treatment approaches for medulloblastoma have advanced, with surgical resection being a primary treatment followed by adjuvant therapies like radiation and chemotherapy.

Other tumors like astrocytomas and oligodendrogliomas can occur in the brain, but they are more commonly found in adults and do not predominantly affect the cerebellum as medulloblastomas do. Neuroblastoma is primarily a tumor of the adrenal glands and sympathetic nervous system, most commonly affecting younger children, and does not typically arise in the cerebellum. This further emphasizes medulloblastoma's unique association with cerebellar lesions.