患者,男,60岁。双下肢进行性无力,胸部束带状疼痛,胸部以下感觉障碍,大小便障碍进行性加重半年入院。入院体检:神清、呼吸平稳,胸4节段以下深、浅感觉减退,无感觉分离,双下肢软瘫,肌力0级。ＭＲＩ检查:胸4节段脊髓膨大,长短信号混杂,未见典型的低信号蜿蜒迂曲及流空现象。在诊 Patient, male, 60 years old. Progressive weakness of both lower extremities, chest banding pain, sensory disturbances below the chest, progressive incontinence increased hospitalization for six months. Admission medical examination: God clear, breathing stable, below the chest 4 deep, shallow feel diminished, no feeling of separation, both lower limbs soft paralysis, muscle 0. MRI examination: 4 sections of the thoracic spine enlargement, the length of the signal mixed, no typical low signal meandering tortuous and air flow phenomenon. In the clinic