Table 3 Sonographic appearance of thyroid nodules based on ACR TI-RADS
ACR-TIRADS based on | Frequency n = 159 | Percentage |
|---|---|---|
Composition | ||
Cystic/almost completely cystic | 10 | 6.3 |
Spongiform | 3 | 1.9 |
Mixed cystic and solid | 59 | 37.1 |
Solid/ almost solid | 87 | 54.7 |
Shape | ||
Wider than tall | 154 | 96.9 |
Taller than wide | 5 | 3.1 |
Echogenicity | ||
Anechoic | 13 | 8.2 |
Hyperechoic or isoechoic | 133 | 83.7 |
Hypoechoic | 12 | 7.6 |
Very hypoechoic | 1 | 0.6 |
Margin | ||
Smooth | 91 | 57.2 |
Ill defined | 60 | 37.7 |
Lobulated/ irregular | 4 | 2.5 |
Extra thyroid extension | 4 | 2.5 |
Echogenic foci | ||
None/ large comet tail artifact | 141 | 88.7 |
Macro calcification | 12 | 7.6 |
Peripheral calcifications | 1 | 0.6 |
Punctate echogenic foci | 5 | 3.1 |