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

Abstract

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

Radiation exposure and clinical outcome in patients undergoing percutaneous intradiscal ozone therapy for disc herniation: Fluoroscopic versus conventional CT guidance

“…Mini-invasive techniques are more and more used for many pathologies, both oncologic and non-oncologic [ 16 – 20 ]. Oxygen-ozone chemonucleolysis is a safe and minimally invasive disc therapy, commonly used worldwide for the treatment of disc herniation since the 1990s [ 16 ].…”

“…Mini-invasive techniques are more and more used for many pathologies, both oncologic and non-oncologic [ 16 – 20 ]. Oxygen-ozone chemonucleolysis is a safe and minimally invasive disc therapy, commonly used worldwide for the treatment of disc herniation since the 1990s [ 16 ]. It is based on the administration of medical ozone (O2-O3 mixture)at non-toxic concentrations (5–40μg of O3 per ml of oxygen),prepared through conversion of pure oxygen (O2) into ozone (O3) using generators that can modify ozone concentration as required [ 21 , 22 ].…”

Knee pain in a male patient in his 90s caused by osteoid osteoma

“…Hashemi reported 45 patients with OO, and the oldest patient was 35 years old. 2 3 Campanacci et al 4 reported 1894 cases with osteoid osteoma, and the age range was 0-68 years.…”

Imaging Findings of Osteoid Osteomas in Children and Adolescents, Ct Versus Mri: A Single Center Experience

“…Night pain that relieves by the administration of salicylates and other nonsteroidal anti-inflammatory drugs is the most frequent complaint (3). The location of the lesion governs the clinical course.…”