You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is true about medulloblastomaa) Radiosensitive tumorb) Spreads through CSFc) Surgical Rx not doned) Occurs in young age groupe) It is a supratentorial tumor and explain in detail?
Medulloblastoma 

Its a primitive-neuroectodermal tumor (P-NET)
Age

-     primarily childhood tumor
-     its the most common primary brain tumor in children (Ref Sabiston 17/e, p 2145]

Location
infratentorial
most common site is yentas (75%) (most common site in adults is lateral cerebellar hemisphere)
Medulloblastomas tend to metastasize early, widely and massively throughout the CSF.
Treatment consists of surgical resection followed by radiation therapy.
Medulloblastoma is moderately radiosensitive.