Imaging-guided radiofrequency ablation of osteoid osteoma in typical and atypical sites: Long term follow up.

摘要: Purpose To assess efficacy and safety of imaging-guided radiofrequency ablation (RFA) Osteoid Osteoma (OO) in both typical atypical sites. Methods materials Between January 2014 March 2019, 102 consecutive percutaneous RFA were performed retrospectively reviewed. The procedures using a bipolar system (Covidien, exposed tip 0.7-1cm), under Computed Tomography (CT) guidance or navigation (Masmec) CT Cone Beam (CBCT) guidance. Patients followed up over 24 months. Clinical success recurrences considered on the base established criteria. In patients with clinical failure and/or imaging evidence relapse, retreatment was considered. Results Administered power per-procedure ≤8 W (mean temperature, 90°C). pre-procedure average value visual analog scale (VAS) 8.33+/-0.91. Primary secondary rate 96.08% (98/102) and100% (102/102), respectively. No major complication described. Technical proved every patient by scan acquisition after needle positioning. Relapse tumour location significantly correlated (p-value = 0.0165). mean dose-length product 751.55 mGycm2. Advanced bone healing noted 68 lesions 1y-follow 86 2y-follow up. Conclusion Imaging-guided is highly effective technique for OO, CBCT guidance, systems operator experience grant technical success, which most crucial parameter affecting outcome.