患者女，50岁，因右侧乳腺癌在外院行根治术，术后20天用CMF方案化疗。具体用法为：环磷酸胺600mg静注，甲氨蝶吟15mg肌注，5一氟豚呼院500mg加入5％葡萄糖液中静滴，均每周1次，连用2周．休息2周后重复。第3次用药后，患者出现头晕。第4次用药后则出现头晕、乏力、步态不稳等 The female patient, 50 years old, had a radical mastectomy at the right side for breast cancer and was treated with the CMF regimen 20 days after surgery. Specific usage: ring 600mg intravenous phosphate, methotrexate 15mg intramuscular injection, 5 fluorine porcine hospital call 500mg 5% glucose solution infusion, are once a week, once every 2 weeks. Repeat after 2 weeks rest. After the third medication, the patient developed dizziness. After the fourth medication, dizziness, fatigue, gait instability, etc.