Our primary goal will be to investigate the analgesic efficacy of ultrasound (US)-assisted caudal epidural PRF (pulsed radiofrequency)( stimulation in patients with perineal or anal pain cancer patients using (visual analog scale (VAS) scores from 0 to 10 at the baseline (pretreatment), two, four, and eight weeks; secondary outcomes will be the effects on opioid use and total opioid use in the 24 h, quality of life, patient satisfaction and opioid and intervention related side effects.
American Society of Anesthesiology physical status of I or III (ASA), of both sex
cancer-related anal or perineal pain
coagulopathies
allergies to the contrast dye
patients with moderate or significant cardiac/respiratory disease or hepatic
Parallel
US assisted caudal epidural pulsed radiofrequency
Procedure/Surgerypatients will receive US assisted caudal epidural pulsed radiofrequency and followed up to 8 weeks
visual analog scale (VAS) score 4 weeks post-intervention
Our primary goal will be to investigate the analgesic efficacy of ultrasound-assisted caudal epidural PRF stimulation in patients with perineal or anal pain cancer patients using VAS scores from 0 to 10 at the baseline (pretreatment), two, four, and eight weeks
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