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© 2016. This work is published under http://creativecommons.org/licenses/by-nc/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Purpose:

The aim of this study was to evaluate the efficacy of radiofrequency (RF) ablation for benign 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 ablation between March 2010 and January 2013. The internal and external factors of these nodules were retrospectively reviewed and correlated with the therapeutic success and the volume reduction ratio (VRR). The volume and size of the nodules were determined before treatment, and the VRR was calculated at 6-month and 1-year follow-up examinations after RF ablation. Therapeutic success 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. The therapeutic success rate after 6 months and 1 year was 81.8% and 90.9%, respectively. At the 1-year follow-up, the margin of the nodule correlated with therapeutic success. Most of the successfully 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 having a 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-year follow-up examination after RF ablation.

Correspondence to: Soo Jin Kim, MD, Department of Radiology, New Korea Hospital, 283 Gimpo hangang 3-ro, Gimpo 10086, Korea Tel. +82-31-980-9126 Fax. +82-31-982-9800 E-mail: [email protected]

Details

Title
Radiofrequency ablation of benign thyroid nodules: evaluation of the treatment efficacy using ultrasonography
Author
Hye Shin Ahn  VIAFID ORCID Logo  ; Soo Jin Kim  VIAFID ORCID Logo  ; Park, Sung Hee  VIAFID ORCID Logo  ; Seo, Mirinae  VIAFID ORCID Logo 
Pages
244-252
Section
Original Article
Publication year
2016
Publication date
Jul 2016
Publisher
Korean Society of Ultrasound in Medicine
ISSN
22885919
e-ISSN
22885943
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2691813750
Copyright
© 2016. This work is published under http://creativecommons.org/licenses/by-nc/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.