患者男，48岁。因胸背部痛20d，双下肢麻木无力15d入院。入院前20d无诱因出现胸背部痛，15d前出现双下肢麻木无力，由近端向远端发展，进行性加重，伴二便障碍。查体：消瘦，浅表淋巴结未们及，心、肺未见异常。T4～T5棘突有压痛，T7以下浅感觉、腹壁反射及提睾反射均消失，双 Male patient, 48 years old. Due to chest and back pain for 20 days, the lower extremities were numb for 15 days and admitted to the hospital. 20d before admission, there was no incentive for chest and back pain, 15 days before the emergence of numbness in both lower extremities, from the proximal to distal development, progressive aggravation, with two stool disorders. Physical examination: weight loss, superficial lymph nodes, no abnormalities in heart and lung. T4 ~ T5 spinous processes have tenderness, shallow sensation below T7, abdominal wall reflex and cremasteric reflex disappear, double