Radiofrequency ablation vs microwave ablation for osteoid osteomas: long-term results
- PDF / 478,629 Bytes
- 6 Pages / 595.276 x 790.866 pts Page_size
- 95 Downloads / 226 Views
SCIENTIFIC ARTICLE
Radiofrequency ablation vs microwave ablation for osteoid osteomas: long-term results Joseph Reis 1
&
Young Chang 2 & Ashwani K. Sharma 3
Received: 30 April 2020 / Revised: 11 June 2020 / Accepted: 12 June 2020 # ISS 2020
Abstract Objective Osteoid osteomas are benign bone tumors commonly treated using thermal ablation. We compare the technical success, complication rates, and long-term efficacy of the two most common ablation types: radiofrequency and microwave. Materials and methods A retrospective study was performed of all osteoid osteoma ablation procedures between 2007 and 2017. A ten-point numerical pain scale was used to quantify symptoms before and after the procedures with > 12-month follow-up. Complications were reported using the Society of Interventional Radiology Adverse Events reporting criteria. Results Twenty-nine patients successfully underwent 15 radiofrequency ablations and 15 microwave ablations with a technical success rate of 83% for radiofrequency and 100% for microwave (p = 0.23). Long-term recurrence rates (p = 1.0) and complication rates (p = 0.60) were not significantly different for the groups. One patient developed a skin burn following microwave ablation and another developed 12 months of sciatic neuropathy following radiofrequency ablation. Conclusion Microwave and radiofrequency ablation are safe and effective methods for treating osteoid osteomas with similar long-term efficacies. Although radiofrequency ablation is more commonly reported to result in skin burns, this complication can arise during microwave ablation. Keywords Ablation . Osteoid osteoma . Microwave . Radiofrequency . Radiology
Introduction Osteoid osteomas are benign bone tumors composed of a dense trabeculated nidus surrounded by vascular connective tissue containing unmyelinated nerves and surrounding reactive bone [1]. They commonly present with focal pain directly over the tumor that is worse at night or with activity. Traditional treatment methods include conservative medical therapy and en bloc surgical resection. Minimally invasive therapy with radiofrequency ablation (RFA) was first reported in 1992 and has since become a primary method of treatment [2]. Additional ablative techniques using microwave ablation
(MWA), cryoablation, alcohol ablation, laser ablation, and high-intensity focused ultrasound (HIFU) have since been described [3]. While RFA continues to be the most common method of ablation, an increasing number of studies have reported similar technical success and complication rates with microwave ablation [4]. However, long-term recurrence has not been compared between the two modalities. We compare the technical success, complication, and long-term (> 12 months) clinical success rates of MWA to impedancebased RFA in a limited cohort of patients.
Methods * Joseph Reis [email protected] 1
Department of Radiology, Seattle Children’s Hospital, 4800 Sand Point Way NE, Seattle, WA 98105, USA
2
Department of Radiology, SSM Health Medical Group, 1000 N Lee Ave,
Data Loading...
