<prompt> Best treatment for glioblastoma multiforme:ChemotherapyRadiationExcision with radiationStereotactic surgery  <response>: Ans. C. Excision with radiation These are highly infiltrative tumors, and the areas of increased T2FLAIR signal surrounding the main tumor mass contain invading tumor cells. Treatment involves maximal surgical resection followed by partial-field external beam radiotherapy 6000cGy in thirty 200-cGy fractions with concomitant temozolomide, followed by 6-12 months of adjuvant temozolomide 