<prompt> 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 tumoracdabdabcab  <response>: Medulloblastoma Its a primitive-neuroectodermal tumor P-NETAge- primarily childhood tumor- its the most common primary brain tumor in children Ref Sabiston 17e, p 2145Locationinfratentorialmost common site is yentas 75 most common site in adults is lateral cerebellar hemisphereMedulloblastomas tend to metastasize early, widely and massively throughout the CSF.Treatment consists of surgical resection followed by radiation therapy.Medulloblastoma is moderately radiosensitive. 