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. 2020 Oct;9(5):1674–1684. doi: 10.21037/gs-20-535

Table 3. ACR TI-RADS categories for surgical thyroid nodules.

ACR TI-RADS Malignant (n=978) Benign (n=58) ROM (%)
TI-RADS 2 0 9 0
TI-RADS 3 6 21 22.2
TI-RADS 4 22 10 68.8
TI-RADS 5 950 18 98.1

ACR TI-RADS, American College of Radiology Thyroid Imaging Reporting and Data System; ROM, risk of malignancy.