title: Percutaneous laser photocoagulation of spinal osteoid osteomas under CT guidance.
abstract: OBJECTIVE
  Spinal osteoid osteomas are rare; when they occur, they are usually treated by surgical or percutaneous excision. The aim of percutaneous interstitial laser photocoagulation (ILP) of osteoid osteomas under CT guidance is thermal destruction of the nidus using low-power laser energy, thus precluding bone resection and open surgery.
  
  
  METHODS
  Three cases of spinal osteoid osteomas were treated with percutaneous ILP of the nidus. Under CT guidance, the needle was positioned in the center of the nidus, at least 8 mm from neurologic structures. Using a high-power semiconductor diode laser (805 nm) with a 400-microm optical fiber, we delivered 600 to 800 joules to the nidus, depending on its size. The procedure was performed with the patient under neuroleptanalgesia and required overnight hospitalization.
  
  
  RESULTS
  Complete pain relief was obtained in all three patients within 24 hours of the procedure, and no major complications were incurred. Follow-up ranged from 20 months to 60 months.
  
  
  CONCLUSIONS
  Percutaneous ILP of spinal osteoid osteoma is a promising, simple, precise, and minimally invasive technique and may be an alternative to traditional surgical and percutaneous ablations.
authors.affiliation: Department of Radiology, University Hospital of Strasbourg, France.
authors.forename: A
authors.initials: A
authors.lastname: Gangi
authors.forename: J L
authors.initials: JL
authors.lastname: Dietemann
authors.forename: S
authors.initials: S
authors.lastname: Guth
authors.forename: L
authors.initials: L
authors.lastname: Vinclair
authors.forename: J
authors.initials: J
authors.lastname: Sibilia
authors.forename: R
authors.initials: R
authors.lastname: Mortazavi
authors.forename: J P
authors.initials: JP
authors.lastname: Steib
authors.forename: C
authors.initials: C
authors.lastname: Roy
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D017075:Laser Coagulation; D008297:Male; D010017:Osteoma, Osteoid / Q000000981:diagnostic imaging / Q000601:surgery*; D015641:Radiography, Interventional; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D014057:Tomography, X-Ray Computed