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Subarachnoid neurolytic block (dorsal rhizotomy) was carried out in patients suffering from severe pain unresponsive to analgesic therapy. An intrathecal catheter technique was performed in 20 patients with lung cancer. Visual analog scale (VAS) for pain, patient satisfaction, and complications were recorded at 24 hours, 1 week, and 1, 2, and 3 months after procedure. VAS and patient satisfaction significantly decreased at measured time points (P < 0.05). Duration of procedure was 20.3 ± 6.4 minutes; no significant complications were reported. This new intrathecal catheter technique for dorsal rhizotomy in advanced lung cancer patients was an easily performed, effective, and safe technique in this setting.