患者男,17岁。因发热,腰痛4天于1980年11月11日入院。病前健康,无腰痛史,生活在血吸虫病疫区。入院后二天腰痛加重,两下肢麻木。次日两下肢不能移动,尿潴留。体检:体温39℃,脉搏136次,血压108/64。神志清楚,巩膜无黄染,皮肤、粘膜未见淤点(斑)。左肺少量干罗音,右下肺湿罗音。心脏正常。腹软,肝大肋下2cm,剑下4cm,脾未触及。脊柱无异常。神经系统检 Patient male, 17 years old. Due to fever, low back pain 4 days in November 11, 1980 admitted. Premorbid health, no back pain history, living in schistosomiasis epidemic area. Low back pain increased two days after admission, numbness of the lower extremities. The next two legs can not move, urinary retention. Physical examination: body temperature 39 ℃, pulse 136 times, blood pressure 108/64. Consciousness, Sclera no yellow dye, skin, mucous membrane no bruises (spots). A small amount of left lung dry rales, lower right lung wet rales. The heart is normal. Abdomen soft, liver ribs 2cm, sword 4cm, spleen not touched. No abnormal spine. Neurological examination