WHO将癌痛列为急需解决的重点问题之一,并推荐三级阶梯止痛疗法,旨在最大限度地控制癌痛,直至患者死亡。神经破坏性阻滞是介于药物止痛和神经外科破坏手术之间的治疗方法,当顽固性癌痛用化疗、放疗、止痛药物难以止痛时,使用神经破坏性阻滞止痛亦是手段之一。采用无水乙醇注入硬膜外腔 The WHO lists cancer pain as one of the most important issues to be solved, and recommends a three-step analgesic therapy designed to maximize the control of cancer pain until the death of the patient. Neuro-damaging block is a treatment method between drug analgesia and neurosurgery disruption surgery. When intractable cancer pain is difficult to relieve with chemotherapy, radiotherapy, and analgesics, the use of nerve block is one of the means. Injection of ethanol into the epidural space