title: CT-guided percutaneous radiofrequency ablation of spinal osteoid osteoma.
abstract: BACKGROUND
  This study evaluated the feasibility, efficacy and safety of CT-guided percutaneous radiofrequency ablation in patients with spinal osteoid osteoma.
  
  
  METHODS
  Two patients suffered spinal osteoid osteoma were treated with CT-guided percutaneous radiofrequency ablation under local anesthesia. Lesions located in sacral vertebrae and cervical vertebrae, which were adjacent to nerve root and spinal canal respectively. Tumors were treated under 90°C radiofrequency temperature lasting 4 minutes by an electrode placement. Visual analog scale was used to evaluate the pain improvement.
  
  
  RESULTS
  No complications were observed pre- and post-operation. Patients recovered to normal activities immediately and achieved complete pain relief in 24 hours. No symptoms were recurrent in 5 months and 4 months follow up. Mild scoliosis has been recovered in case 2.
  
  
  CONCLUSIONS
  CT-guided percutaneous radiofrequency ablation of spinal osteoid osteoma is safe, effective and has more clinical benefits. The long-term outcome needs further observation.
authors.affiliation: Department of Radiology, Peking University Third Hospital, Beijing 100191, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
authors.forename: Xiao-Guang
authors.initials: XG
authors.lastname: Liu
authors.forename: Bin
authors.initials: B
authors.lastname: Zhu
authors.forename: Hui-Shu
authors.initials: HS
authors.lastname: Yuan
authors.forename: Song-Bo
authors.initials: SB
authors.lastname: Han
authors.forename: Yong-Qiang
authors.initials: YQ
authors.lastname: Ma
mesh_terms: D000328:Adult; D017115:Catheter Ablation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010017:Osteoma, Osteoid / Q000628:therapy*; D013125:Spinal Neoplasms / Q000628:therapy*; D014057:Tomography, X-Ray Computed / Q000379:methods*