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http://dx.doi.org/10.7742/jksr.2019.13.2.201

Differential Diagnosis of Benign and Malignant Thyroid Nodules Using the K-TIRADS Scoring System in Thyroid Ultrasound  

An, Hyun (Department of Radiology, Inje University Busan Paik Hospital)
Im, In Cheol (Department of Radiological Science, Dongeui University)
Lee, Hyo-Yeong (Department of Radiological Science, Dongeui University)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.2, 2019 , pp. 201-207 More about this Journal
Abstract
This study has evaluated whether the method of using the combination of different risk group, according to K-TIRADS classification and K-TIRADS classification in thyroid ultrasonography is useful in a differential diagnosis of benign and malignant nodules. The subject was patients underwent thyroid ultrasonography and retrospective analysis were performed based on the results of fine needle aspiration cytology. A chi-square test was performed for the difference analysis of the score system in K-TIRADS and different risk group according to the benign and malignant of thyroid nodule. The optimized cut off value was determined by the K-TIRADS score and different risk group to predict malignant nodule through ROC curve analysis. In the differential verification result of K-TIRADS and different risk group, according to the classification of benign and malignant nodule group each showed significant difference statistically(p=.001). In the point classification according to K-TIRADS for the prediction of benign and malignant in ROC curve analysis showed AUC 0.786, Cut-off value>2(p=.001), and in the different risk group, it was decided as AUC 0.640, Cut-off value>2(p=.001). When discovering the nodule in thyroid ultrasound, it is considered that the K-TIRADAS which helps in identifying benign and malignant thyroid nodules, it is considered to be helpful in the differential diagnosis of thyroid nodules, than the classification system according to Different risk group, and when applying the classification system according to K-TIRADS, it is considered that it can reduce unnecessary fine needle aspiration cytology and could be helpful in finding the malignant nodules early.
Keywords
Malignant thyroid nodule; K-TIRADS; Fine-needle aspiration cytology; AUC;
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