<prompt> Most common brain tumor?AstrocytomaOligodendrogliomaEpendymomaMedulloblastoma  <response>: Ans. a AstrocytomaRef: Harrison 19th ed. 599-600 Most malignant brain tumor is Glioma subtype - astrocytoma Most common brain tumor is metastasis to brain oat cell cancerbreast cancer malignant melanoma Most common benign brain tumor is Meningioma OC for brain tumor is gadolinium enhanced MRI 