Thyroid Ultrasound Examination: Results of the Second Full-scale Survey (Third-round Survey)

These are the results of the second Full-scale Survey, which was the third round of the Thyroid Ultrasound Examination. Examinees diagnosed as Grade A in the Primary Examination accounted for 99.3% of the total, while those diagnosed as Grade B accounted for 0.7%. Most of those diagnosed as Grade A2 had cysts of 20 mm or smaller and those diagnosed as Grade B had nodules of 5.1 mm or larger. This tendency was the same as that observed in the Preliminary Baseline Survey and the first Full-scale Survey (second-round survey). In the Confirmatory Examination, as a result of fine-needle aspiration cytology, 31 examinees were diagnosed that their tumors were malignant or suspicious for malignancy.

• Included in this reference material on March 31, 2019
• Updated on March 31, 2022