Abstract No. 508 Locoregional control of painful spine metastatic lesions after percutaneous radiofrequency ablation and vertebral augmentation

Abstract

Evaluate radiologic outcomes of radiofrequency ablation and vertebral augmentation (RFA-VA) for the treatment of painful osseous spine metastatic disease. A retrospective review of patients who underwent ablations of vertebral body (VB) from January 2012 through August 2019 was performed. 166 patients, with 264 VB lesions from a single tertiary academic medical center were included in the study. 46.4% were men with the average age of 60.2. Data was collected from the medical record. Based on imaging characteristics on postprocedural MR, CT, or PET, outcomes of the treated osseous disease were recorded as disease progression, residual disease, or treatment changes. The average length of time between RFA-VA and imaging was 283 days (range, 4-2152 days). 227 lesions (86.0%) had postprocedural imaging with 57.0% undergoing an MR examination. Of these 227 lesions, 145 (54.9%) had treatment related changes without evidence of residual disease. Thirty-five (13.3%) demonstrated enhancement within the procedural bed, consistent with residual disease. Forty-seven (17.8%) had imaging characteristics consistent with disease progression. RFA-VA is a minimally invasive and effective percutaneous treatment option which demonstrates durable locoregional control for patients with painful osseous spine metastatic disease.