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Recurrent laryngeal nerve thermal injury in radiofrequency ablation for papillary thyroid carcinoma and related risk factors: a prospective large cohort study.

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Title: Recurrent laryngeal nerve thermal injury in radiofrequency ablation for papillary thyroid carcinoma and related risk factors: a prospective large cohort study.
Authors: Hua, Qing1,2,3 (AUTHOR), Song, YanYan4 (AUTHOR), Zhou, Wei1,3 (AUTHOR), Liu, ZhenHua1,3 (AUTHOR), Zhang, Lu1,3 (AUTHOR), Zhu, Ying1 (AUTHOR), Lai, LiMei1 (AUTHOR), Yeung, Yat Hin1 (AUTHOR), Li, Ning5,6 (AUTHOR), Zhan, WeiWei1,2 (AUTHOR), Dong, YiJie1,2,3 (AUTHOR) dongyiyin@126.com, Xia, ShuJun1,2,3 (AUTHOR) xiashu_jun@126.com, Zhou, JianQiao1,2,3 (AUTHOR) zhousu30@126.com, on behalf of The Chinese Ablation Alliance for Thyroid and Cervical Lymph Nodes (AUTHOR), Xiang, Xie7 (AUTHOR), Jinping, Wang8 (AUTHOR), Yongchao, Chen9 (AUTHOR), Nian'an, He10 (AUTHOR), Lianhe, Lin11 (AUTHOR), Rongxi, Liang12 (AUTHOR)
Source: European Radiology. Sep2025, Vol. 35 Issue 9, p5804-5816. 13p.
Subjects: Recurrent laryngeal nerve, Thyroid cancer, Treatment effectiveness, Catheter ablation, Wounds & injuries, Interventional radiology, Prediction models, Disease risk factors
Abstract: Objective: To establish a prediction model for recurrent laryngeal nerve thermal injury (RLNTI) in radiofrequency ablation (RFA) of papillary thyroid carcinoma (PTC). Materials and methods: This prospective study was conducted at a single center from July 2016 to September 2022. Patients diagnosed with PTC and received US-RFA by different interventional therapy groups were enrolled, and classified as derivation cohort and validation cohort based on therapy groups. The logistic regression analysis was used in derivation cohort to develop the model and internal and external validation was performed in derivation and validation cohort respectively. Results: The derivation cohort included 1632 patients (mean age, 40 years, ±11 (standard deviation), 1300 female), and the validation cohort comprised 755 patients (mean age, 38 years, ±11 (standard deviation), 584 female). Three variables were independently associated with RLNTI: the minimum distance from tumor to tracheoesophageal groove (TEG-D) ≤ 2.95 mm (odds ratio, 8.179; p < 0.0001), tumor posterior location (odds ratio, 3.849; p = 0.0008) and ablation energy > 0.695 kcal (odds ratio, 4.537; p < 0.0001). The area under the receiver operating characteristic curve (AUC) of the model in the derivation cohort, validation cohort, and total group were 0.877 (95% CI: 0.845, 0.910), 0.901 (95% CI: 0.835, 0.967) and 0.886 (95% CI: 0.85, 0.915) respectively. The calibration plot and Hosmer-Lemeshow test demonstrated a good fit (χ² = 3.49, p = 0.321). Conclusion: The prediction model of RLNTI was derived based on TEG-D, tumor posterior location, and ablation energy and exhibited good discrimination and calibration abilities. Key Points: QuestionRecurrent laryngeal nerve thermal injury (RLNTI) is a major complication of radiofrequency ablation (RFA) for papillary thyroid carcinoma (PTC), while related risk factors are unclear. FindingsThe minimum distance from tumor to tracheoesophageal groove ≤ 2.95 mm, tumor posterior location, and ablation energy > 0.695 kcal are factors independently associated with RLNTI. Clinical relevanceThis study developed a simple prediction model with good discrimination and calibration abilities, which provided interventional radiologists an evidence-based method to predict RLNTI and thereby reduce the incidence of RLNTI in RFA of PTC. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Recurrent laryngeal nerve thermal injury in radiofrequency ablation for papillary thyroid carcinoma and related risk factors: a prospective large cohort study.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Sep2025, Vol. 35 Issue 9, p5804-5816. 13p.
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  Data: Objective: To establish a prediction model for recurrent laryngeal nerve thermal injury (RLNTI) in radiofrequency ablation (RFA) of papillary thyroid carcinoma (PTC). Materials and methods: This prospective study was conducted at a single center from July 2016 to September 2022. Patients diagnosed with PTC and received US-RFA by different interventional therapy groups were enrolled, and classified as derivation cohort and validation cohort based on therapy groups. The logistic regression analysis was used in derivation cohort to develop the model and internal and external validation was performed in derivation and validation cohort respectively. Results: The derivation cohort included 1632 patients (mean age, 40 years, &#177;11 (standard deviation), 1300 female), and the validation cohort comprised 755 patients (mean age, 38 years, &#177;11 (standard deviation), 584 female). Three variables were independently associated with RLNTI: the minimum distance from tumor to tracheoesophageal groove (TEG-D) ≤ 2.95 mm (odds ratio, 8.179; p &lt; 0.0001), tumor posterior location (odds ratio, 3.849; p = 0.0008) and ablation energy &gt; 0.695 kcal (odds ratio, 4.537; p &lt; 0.0001). The area under the receiver operating characteristic curve (AUC) of the model in the derivation cohort, validation cohort, and total group were 0.877 (95% CI: 0.845, 0.910), 0.901 (95% CI: 0.835, 0.967) and 0.886 (95% CI: 0.85, 0.915) respectively. The calibration plot and Hosmer-Lemeshow test demonstrated a good fit (χ&#178; = 3.49, p = 0.321). Conclusion: The prediction model of RLNTI was derived based on TEG-D, tumor posterior location, and ablation energy and exhibited good discrimination and calibration abilities. Key Points: QuestionRecurrent laryngeal nerve thermal injury (RLNTI) is a major complication of radiofrequency ablation (RFA) for papillary thyroid carcinoma (PTC), while related risk factors are unclear. FindingsThe minimum distance from tumor to tracheoesophageal groove ≤ 2.95 mm, tumor posterior location, and ablation energy &gt; 0.695 kcal are factors independently associated with RLNTI. Clinical relevanceThis study developed a simple prediction model with good discrimination and calibration abilities, which provided interventional radiologists an evidence-based method to predict RLNTI and thereby reduce the incidence of RLNTI in RFA of PTC. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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