Radiofrequency Ablation of Lung Tumors Using a Multitined Expandable Electrode: Impact of the Electrode Array Diameter on Local Tumor Progression
Abstract
To retrospectively investigate the impact of the electrode array diameter on local tumor progression after lung radiofrequency ablation. This study included 651 lung tumors treated using multitined expandable electrodes and followed for ≥ 6 months. The mean long-axis tumor diameter was 12 mm ± 7 (range, 2-42 mm). The difference between electrode array diameter and tumor diameter (DAT) was used to investigate the impact of the electrode array diameter. All tumors were classified into 2 groups according to various variables including DAT (≥ 10 mm or < 10 mm). The primary technique efficacy rates were calculated using Kaplan-Meier analysis and compared between the 2 groups of each variable using the log-rank test. In addition, crude and multivariate multilevel survival analyses were performed by sequentially including DAT and the other variables in 5 models. The median DAT for 651 tumors was 12 mm (range, -15 to 24 mm). The technique efficacy rate was significantly lower in the < 10 mm DAT group than in the ≥ 10 mm group (P < .001). In the crude and multivariate multilevel survival analyses, < 10 mm DAT was a significant risk factor for local progression in all models except model 5 (P = .067). In the ≥ 10 mm group, the technique ...Continue Reading
References
Radiofrequency ablation in a porcine lung model: correlation between CT and histopathologic findings
Image-guided tumor ablation: standardization of terminology and reporting criteria--a 10-year update
Image-guided tumor ablation: standardization of terminology and reporting criteria--a 10-year update
Citations
Image-guided percutaneous ablation for the treatment of lung malignancies: current state of the art.
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