Thyroid Ultrasound Examination: Results of the Third Full-scale Survey (Fourth-round Survey)
These are the results of the third Full-scale Survey which was the fourth 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 and second Full-scale Surveys (second- and third-round surveys).
In the Confirmatory Examination, as a result of fine-needle aspiration cytology, 21 examinees were diagnosed that their tumors were malignant or suspicious for malignancy.
- Included in this reference material on March 31, 2021