患者 男,40岁,工人。一年来出现左侧同向偏盲,走路时左肩部常与他人相撞。入院前12天晚,于性交中突发头痛,右侧为著,呈持续性跳痛,呕吐一次。4天后发觉左上肢力弱、发麻。查体脑膜刺激征(一),左侧同向性偏盲,眼底(一),左手握力较右手减弱,深浅反射正常,病理征(一)。头痛发作后4天行腰穿压力255mmH_2O,细胞数5400个/mm~3,有新鲜RBC。CT示右侧脑室颞角深处有2.5×4cm大小椭圆形、 Male patient, 40 years old, worker. Left over the year with the same direction hemianopia, left shoulder often walk with others collided. 12 days before admission, sudden headache in sexual intercourse, the right side of the was persistent jump pain, vomiting once. Four days later found the left upper limb weak, numb. Check the meningeal irritation (a), the left isotropic hemianopia, fundus (a), left hand grip weaker than the right hand, the depth of reflex normal, pathological sign (a). Four days after the onset of headache, lumbar puncture pressure 255mmH2O, cell number 5400 / mm ~ 3, with fresh RBC. CT showed right ventricular temporal horn depth 2.5 × 4cm size oval,