Table 3 Sonographic features of nodules that obtained different risk categories according to ACR TI-RADS and EU-TIRADS
From: Analysis of 665 thyroid nodules using both EU-TIRADS and ACR TI-RADS classification systems
Number of nodules | Sonographic features | ACR/EU TI-RADS classification | Recommendation to FNA | Number of nodules punctured | Recommendation discrepancy |
|---|---|---|---|---|---|
17 | Mixed Isoechoic | 2/3 | ACR: none EU: > 20 mm | ACR: 0 EU: 12 | 12 only EU - 1 Bethesda IV - 11 Bethesda II (7 removed = benign, 2 incidental papillary tumours) |
55 | Mixed Hypoechoic (Fig. 5A) | 3/4 | ACR: ≥ 25 mm EU: > 15 mm | ACR: 31 EU: 49 | 18 only EU - 1 Bethesda IV - 17 Bethesda II |
59 | Solid/Mixed Very hypoechoic (Fig. 5B) | 4/5 | ACR: ≥ 15 mm EU: > 10 mm | ACR: 44 EU: 59 | 15 only EU - 3 Bethesda III - 12 Bethesda II |
8 | Solid Isoechoic Or Mixed Hypoechoic + Punctate echogenic foci (Fig. 5C) | 4/5 | ACR: ≥ 15 mm EU: > 10 mm | ACR: 6 EU: 8 | 2 only EU - 1 Bethesda IV (removed, incidental papillary tumour) - 1 Bethesda II |
4 | Solid Iso-/Hyperechoic Irregular margins | 4/5 | ACR: ≥ 15 mm EU: > 10 mm | ACR: 2 EU: 4 | 2 only EU - 2 Bethesda II |
15 | Solid Isoechoic Macrocalcifications | 4/3 | ACR: ≥ 15 mm EU: > 20 mm | ACR: 14 EU: 9 | 5 only ACR - 1 Bethesda IV (removed, benign) - 2 Bethesda III (removed, benign) - 2 Bethesda II |
7 | Solid Iso-/Hyperechoic Or Mixed isoechoic + Taller-than-wide | 4/5 | ACR: ≥ 15 mm EU: > 20 mm | ACR: 6 EU: 6 | - |
4 | Solid Isoechoic Extrathyroidal extension | 4/3 | ACR: ≥ 15 mm EU: > 20 mm | ACR: 3 EU: 3 | - |
5 | Solid Hypoechoic Extrathyroidal extension (Fig. 5D) | 5/4 | ACR: ≥ 10 mm EU: > 15 mm | ACR: 5 EU: 5 | - |
39 | Cystic/Spongiform | 1/2 | ACR: none EU: none | - | - |