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We encountered two bladder cancer patients who suffered from perineal pain that was intractable despite the use of adjuvant medication. A phenol intrathecal (saddle) block was performed without any specific complications. The results were excellent and allowed the systemic opiate dose to be reduced by more than 80%. We report our clinical experience, including a brief review of the relevant literature. (Korean J Anesthesiol 2006; 50: 351~4)