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15 de feb. de 2024 · ACR TI-RADS is a standardized scoring system for thyroid nodules on ultrasound proposed by the American College of Radiology. It assigns points based on five categories of ultrasound features and recommends FNA or follow-up based on the score (TR1-TR5).
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8 de feb. de 2024 · TR3 – Mildly suspicious; TR4 – Moderately suspicious; TR5 – Highly suggestive of malignancy; A TR3 thyroid nodule means it has some ultrasound features that make cancer slightly more probable, though still unlikely. Symptoms of TR3 Thyroid Nodules. In most cases, TR3 nodules do not cause any symptoms.
21 de ene. de 2021 · For example, the ACR TI-RADS thresholds for biopsy are 1.5 cm for TR4 and 2.5 cm for TR3, whereas the ATA guidelines and K-TIRADS use 1 cm and 1.5 cm, respectively, for similar nodules [14, 20] (Figs. 2 and 3).
10 de mar. de 2020 · Test performance in the TR3 and TR4 categories had an accuracy of less than 60%. Using TR5 as a rule-in test was similar to random selection (specificity 89% vs 90%).
1 de jul. de 2019 · Indications for FNA execution or US follow-up are based on ACR-TI-RADS level and on the maximum diameter of the nodules: for risk grades TR3–TR5, a size threshold at or above which FNA should be performed is indicated.
The cutoff point of 2.5 cm for fine needle aspiration (FNA) in mildly suspicious TR3 lesions is based on studies showing that thyroid carcinomas don’t have a decreased survival until they reach this threshold value. The ACR-TIRADS category has been shown to have good correlation with the malignancy risk in large studies. The risk of malignancy is:
