Results:The features of US were low-lying conus,dorsal position of the cord within the thecal sac and solid or cystic masses in the distal canal,which were similar to those findings of CT or MRI.

• 对术后30例随访超声观察。结果：超声可同样检查CT或MRI显示本症的特征，低位脊髓、脊髓背移、椎管内脂肪瘤或囊性脊椎裂的病变异常；