患者女,31岁,以“间断性头痛、头晕10天余”入院,当地医院脑部MRI检查提示左侧小脑幕占位。体检:神志清,精神可,双侧瞳孔等大等圆,光反射灵敏,四肢肌力正常,双下肢巴氏征未引出。MRI检查:平扫示左枕叶不规则团块状混杂T_1、混杂等T_2信号,病灶跨小脑幕生长,向下突入左 Female patient, 31 years old, with “intermittent headache, dizziness more than 10 days,” admitted to the hospital MRI examination of the brain prompted the left cerebellar occupy. Physical examination: clear mind, mental, bilateral pupil and other large circle, sensitive to light reflex, normal muscle strength of the limbs, lower extremity Pakistan’s symptoms did not lead. MRI examination: plain showed the left occipital lobe irregular lump mixed T_1, mixed T_2 signal, the lesion grows across the tentorium, down into the left