1病历资料患者男,17岁。主因“腹胀,双侧下肢无力3d”入院。患者主诉入院前1周工作时不小心头顶被机器砸伤,感觉当时伤势不重,随后回家休息,砸伤后无头痛、恶心、呕吐及肢体活动障碍。3d后感觉腹胀,呕吐数次,呕吐物为胃内容物,非喷射性,双侧下肢无力,自服“感冒药”(具体不能提供) Patient information Male patient, 17 years old. The main reason, “bloating, bilateral lower extremity weakness 3d ” admission. One week before admission, the patient complained that his head was injured by a machine while working. He felt that the condition was not heavy and then he went home to rest without headache, nausea, vomiting and limb movement disorders. Feel bloating, vomit several times after 3 days, vomit for the contents of the stomach, non-jet, bilateral lower limb weakness, self-serving “cold medicine ” (specifically can not provide)