患者男,21岁,藏族。因腰骶部疼痛半年,双下肢无力、大小便障碍10余天,于2007年5月9日入我院。否认结核病史。无低热、盗汗等结核中毒症状。查体:双下肢肌力2级,肌张力减退;T12以下痛觉减退,膝反射消失,髌阵挛阴性,巴氏征阴性,脑膜刺激征阴性。入院后胸部X Male patient, 21 years old, Tibetan. Due to lumbosacral pain for six months, both lower extremities weakness, toilet more than 10 days, on May 9, 2007 into our hospital. Denied the history of tuberculosis. No fever, night sweats and other symptoms of tuberculosis poisoning. Physical examination: lower extremity muscle strength 2, muscle tension decreased; T12 following hypogonadism, knee reflex disappeared, negative patellar clonus, Pakistan’s negative sign, negative meningeal sign. Chest X after admission