title: [Ultrasound-guided Sciatic Nerve Block (Pulsed Radiofrequency) for Intractable Cancer Pain Caused by Sacral Bone Metastasis].
abstract: We report a case of successful pulsed radiofrequency stimulation of the sciatic nerve for intractable cancer pain caused by sacral bone metastasis of non-small cell lung cancer. A 57-year-old man who suffered from intractable left femoral pain was diagnosed with cancer metastasis to the sacral bone and lumbar spine. Oral oxycodone relieved the pain at rest but he could not walk or remain sitting due to the pain during exercise. Oxycodone rescue or increase did not relieve the pain, but induced drowsiness. Given that sciatic nerve block with mepivacaine was effective, we performed pulsed radiofrequency with ultrasound guidance twice. Pulsed radiofrequency relieved the left femoral pain and he could sit for hours and walk uneventfully. Our finding suggest that ultrasound-guided pulsed radiofrequency of the sciatic nerve effectively relieves intractable left femoral pain caused by sacral bone metastasis.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Fujiwara
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Komasawa
authors.forename: Akira
authors.initials: A
authors.lastname: Hyoda
authors.forename: Ayumu
authors.initials: A
authors.lastname: Kuwamura
authors.forename: Haruki
authors.initials: H
authors.lastname: Kido
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Minami
mesh_terms: D001859:Bone Neoplasms / Q000150:complications* / Q000532:radiotherapy; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000379:methods; D010148:Intractable Pain / Q000188:drug therapy* / Q000209:etiology / Q000532:radiotherapy*; D012447:Sacrum / Q000000981:diagnostic imaging; D012584:Sciatic Nerve / Q000000981:diagnostic imaging / Q000187:drug effects*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography