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자료유형
학술저널
저자정보
안혜신 (중앙의대 영상의학과) 김수진 (Department of Radiology New Korea Hospital) 박성희 (중앙대학교) 서미리내 (중앙의대 영상의학과)
저널정보
대한초음파의학회 ULTRASONOGRAPHY ULTRASONOGRAPHY Vol.35 No.3
발행연도
2016.1
수록면
244 - 252 (9page)

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Purpose: The aim of this study was to evaluate the efficacy of radiofrequency (RF) ablation forbenign thyroid nodules and assess the usefulness of internal factors (ultrasonographic findings)and external factors (treatment-related findings) in prediction of treatment efficacy. Methods: We evaluated 22 benign thyroid nodules from 19 patients treated with RF ablationbetween March 2010 and January 2013. The internal and external factors of these nodules wereretrospectively reviewed and correlated with the therapeutic success and the volume reductionratio (VRR). The volume and size of the nodules were determined before treatment, and the VRRwas calculated at 6-month and 1-year follow-up examinations after RF ablation. Therapeuticsuccess was defined as a >50% volume reduction. Results: The mean VRRs were 66.1±18.7% at 6 months and 74.3±16.7% at 1 year. Thetherapeutic success rate after 6 months and 1 year was 81.8% and 90.9%, respectively. At the1-year follow-up, the margin of the nodule correlated with therapeutic success. Most of thesuccessfully ablated nodules showed well-defined margins on initial ultrasonography (18/20,90%) (P=0.026). In addition, nodules with ill-defined margins showed a tendency toward havinga low VRR at the 6-month and 1-year follow-up examinations. Conclusion: RF ablation was effective in decreasing the volume of benign thyroid nodules. Thyroid nodules with well-defined margins tended to show successful outcomes at the 1-yearfollow-up examination after RF ablation.

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