Development of Asian Consortium for Data Collection and Clinical Trial of CNS Tumors

Radiation Therapy(General guideline) Patients will receive radiotherapy after induction chemotherapy or right after diagnosis without diagnosis. The dose and fields of radiation will be according to the histology, presence of dissemination, and response to the induction chemotherapy or radiotherapy. Radiation therapy can be administered using either of photons or protons. When induction chemotherapy is administered, radiotherapy is recommended to be started within 6 weeks from the last chemotherapy.