患者男,54岁,因突发性双下肢乏力,感觉障碍4h就诊来院前4h无诱因突然出现双下肢乏力,站立、行走困难,伴持续性疼痛,并有麻木感,继而迅即出现感觉障碍,尿潴留,无胸背痛,无意以障碍。发病前近期无外伤、过度疲劳、感染病史,否认高血压、糖尿病、冠心病史。查体:T Male patient, 54 years old, due to sudden weakness of both lower extremities, sensory disturbances 4h treatment 4h before admission, there is no incentive for a sudden emergence of weakness in both lower extremities, standing, walking difficulties, with persistent pain, and numbness, and then immediately sensory dysfunction, Urinary retention, no chest pain, no intention to disorder. Before the onset of no trauma, fatigue, history of infection, denied hypertension, diabetes, coronary heart disease history. Physical examination: T