title: [CT-guided therapy of osteoid osteoma by drill trepanation of the nidus. Clinical follow-up results].
abstract: OBJECTIVE
  Evaluation of technical success and follow-up of patients with osteoid osteoma.
  
  
  METHODS
  9 patients (3 w, 6 m) with a mean age of 22.3 years suffering from an osteoid osteoma localized in the femur were treated with a combination therapy based on drill trepanation of the nidus and subsequent installation of 1-2 ml ethanol (96%). The treatment was done under CT-guidance in general anaesthesia.
  
  
  RESULTS
  During the follow-up period of 20.6 months (10 to 39 months) one relapse occurred within 3 months. This was treated with the same percutaneous method.
  
  
  CONCLUSIONS
  Percutaneous removal of intracortical osteoid osteomas under CT-guidance had success in this study, was technical easy, and a had low relapse rate. In addition the duration of hospitalisation is shorten. Meanwhile other studies have used additive ablation with radiofrequency. A second study has been started in our department using a thermoablative procedure. In a comparison between surgical and radiological methods, the rates of relapse are similar (9% vs. 23% surgically). The CT-guided removal of intracortical osteoid osteomas should be the procedure of first choice.
authors.affiliation: Abteilung Radiologische Diagnostik Universitätsklinikum, Eberhard-karls-Universität Tübingen. bernd.erdtmann@uni-tuebingen.de
authors.forename: B
authors.initials: B
authors.lastname: Erdtmann
authors.forename: S H
authors.initials: SH
authors.lastname: Duda
authors.forename: P
authors.initials: P
authors.lastname: Pereira
authors.forename: B K
authors.initials: BK
authors.lastname: Heim
authors.forename: C D
authors.initials: CD
authors.lastname: Claussen
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D000431:Ethanol / Q000008:administration & dosage; D005260:Female; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010017:Osteoma, Osteoid / Q000000981:diagnostic imaging* / Q000601:surgery*; D015641:Radiography, Interventional; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014207:Trephining
chemical_list: D000431:Ethanol