ocr: SURGERY Biopsy for diagnosis Resection should be avoided CHEMOTHERAPY Should be considered at diagnosis for every patient Must penetrate the BBB Lipophilic (e.g., procarbazine) High-dose with CNS penetration (e.g., MIX) Must have anti-lymphoma activity Should be given prior to radiotherapy RADIOTHERAPY Must be whole brain, if used 4500 cGy, boost not necessary 3600 cGy to eyes, 1f indicated May be deferred in some patients who have a CR to chemotherapy