title: Effective palliative radiofrequency ablation for tumors causing pain, numbness and motor function disorders: case series.
abstract: BACKGROUND
  We present a case series of a palliative radiofrequency ablation (RFA) for the tumors that lead to the resolution of pain and motor function disorders. RFA is widely used on tumors in various organs and often reported in good outcome. There are some reports that RFA was performed as a palliative treatment but a few reports of RFA that performed for lung tumor as a palliative treatment. This case series includes two cases, palliative RFA for a sacrum and a lung tumor. The results of this case series presented that a palliative RFA is effective in improving the symptoms of patients.
  
  
  METHODS
  Case 1. A 64-year-old Japanese woman with a chordoma at her sacrum presented with pain in her left leg and claudication. Though operations, radiation therapy and GS-TAE (gelatin sponge-transarterial embolization, via the L5 lumbar artery) were performed, the size of the tumor leading pain and claudication increased. RFA was performed for the sacral tumor, and these symptoms resolved one year after the procedure. Case 2. A 68-year-old Japanese man with a leiomyosarcoma at the apex of left lung presented with pain and motor function disorders of the left upper limb. Dissemination in the pleura was appeared after the operation for a leiomyosarcoma at the mediastinum. Though radiation therapy and a second operation were performed, the tumor at the apex of the left lung increased and pain and numbness of the left upper limb were appeared after the second operation. RFA was performed for the left lung tumor, and the symptoms resolved 3 months after RFA.
  
  
  CONCLUSIONS
  RFA is effective as a palliative treatment and has a potential to salvage the patients from the symptoms of the tumors when conventional palliative treatments such as surgery, radiation therapy, and chemotherapy are difficult or contraindicated.
authors.affiliation: Department of Radiology, Graduate School of medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan. hamashin_tigers1975@yahoo.co.jp.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Hamamoto
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Matsuoka
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Okuma
authors.forename: Akira
authors.initials: A
authors.lastname: Yamamoto
authors.forename: Masao
authors.initials: M
authors.lastname: Hamuro
authors.forename: Yukio
authors.initials: Y
authors.lastname: Miki
mesh_terms: D000368:Aged; D017115:Catheter Ablation; D002817:Chordoma / Q000150:complications / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D006987:Hypesthesia / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D007890:Leiomyosarcoma / Q000150:complications / Q000503:physiopathology / Q000556:secondary / Q000601:surgery*; D035002:Lower Extremity / Q000294:innervation*; D008175:Lung Neoplasms / Q000150:complications / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009468:Neuromuscular Diseases / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D010146:Pain / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D010166:Palliative Care; D020127:Recovery of Function; D012447:Sacrum / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D013125:Spinal Neoplasms / Q000150:complications / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D034941:Upper Extremity / Q000294:innervation*