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정소령,백정환,이정현,Young Kee Shong,성진용,김규선,Ducky Lee,김지훈,백선미,심정석,나동규 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.1
Objective: To assess the efficacy and safety of thyroid radiofrequency (RF) ablation for benign thyroid nodules by trained radiologists according to a unified protocol in a multi-center study. Materials and Methods: From 2010 to 2011, 345 nodules from 345 patients (M:F = 43:302; mean age ± SD = 46.0 ± 12.7 years, range = 15–79) who met eligibility criteria were enrolled from five institutions. At pre-ablation, the mean volume was 14.2 ± 13.2 mL (1.1–80.8 mL). For 12 months or longer after treatment, 276 lesions, consisting of 248 solid and 28 predominantly cystic nodules, were followed. All operators performed RF ablation with a cool-tip RF system and two standard techniques (a transisthmic approach and the moving-shot technique). Volume reduction at 12 months after RF ablation (the primary outcome), therapeutic success, improvement of symptoms as well as of cosmetic problems, and complications were evaluated. Multiple linear regression analysis was applied to identify factors that were independently predictive of volume reduction. Results: The mean volume reduction at 12 months was 80.3% (n = 276) and at the 24-, 36-, 48-, and 60-month follow-ups 84.3% (n = 198), 89.2% (n = 128), 91.9% (n = 57), and 95.3% (n = 6), respectively. Our therapeutic success was 97.8%. Both mean symptom and cosmetic scores showed significant improvements (p < 0.001). The rate of major complications was 1.0% (3/276). Solidity and applied energy were independent factors that predicted volume reduction. Conclusion: Radiofrequency ablation performed by trained radiologists from multiple institutions using a unified protocol and similar devices was effective and safe for treating benign thyroid nodules.
백정환 ( Jung Hwan Baek ),김윤숙 ( Yoon Suk Kim ),이덕기 ( Ducky Lee ) 대한갑상선학회 2008 International Journal of Thyroidology Vol.1 No.1
A 45-year-old female patient visited our thyroid center with thyrotoxic symptoms and bulging of left neck. Ultrasonogram showed a 3.1 cm sized solid thyroid nodule. The serum TSH level decreased (0.005 u/ml, normal range; 0.4∼4.0 u/ml), however the serum T3 and FT4 levels were within normal limit. 99mTc pertechnate scintigraphy showed a hot nodule in her left thyroid gland and suppression of the extra-nodular uptake. As she refused surgery and 131I radioiodine therapy, radiofrequency ablation was recommended. After two treatment sessions, the serum TSH level was normalized and hyperthyroid symptoms had resolved. At the 16-month follow-up, the hot nodule was invisible and the suppressed extra-nodular uptake had returned to normal. Radiofrequency ablation is a feasible minimally invasive modality for the treatment of an autonomously functioning thyroid nodule.