Thermal Radiofrequency Versus Neurolytic Saddle Rhizotomyfor Severe Pereneal Cancer Pain

The control of perineal malignant pain is difficult and challenging for pain physicians. Different modalities have been tried to treat this complex pain syndrome including pharmacotherapy and interventional therapy. Neuroaxial phenol rhizolysis is simple and cheap option. However; for patients with pelvic or rectal neoplasms and intact bowel and bladder sphincteric functions, there are neurosurgical recomendations of selective sacral nerve roots rhizotomy blockade \"as an alternative to chemical saddle rhizotomy\".