<prompt> Most radiosensitive brain tumor is:EpendymomaMedduloblastomaGlioblastoma multiformeAstrocytoma  <response>: Answer is B Medulloblastomas: Medulloblastomas are highly radiosensitive tumors of the Central Nervous system and more radiosensitive than all gliomas Astrocytoma, Eperdymoma, Glioblastoma Multiforme Medulloblastoma is the most radiosensitive of all gliomas whereas Glioblastomas are the least radiosensitive - Current Guidelines for Management of Cancer 1986289 NOTE Medulloblastoma were originally classified as gliomas but they are now classified as primitive neuroectodermal Tumors PNET Radiosensitive Brain Tumors in Children Medulloblastomas and other PNET Most radiosensitive Gliomas low grade astrocytoma, ependymomu Pineal blastoma Craniopharygnioma Germ cell tumors pure germinoma-highly radiosensitive 