Table 1 Descriptive analysis of sonographic features of thyroid nodules
From: Analysis of 665 thyroid nodules using both EU-TIRADS and ACR TI-RADS classification systems
Sonographic features | Thyroid nodules (n = 665) |
|---|---|
Size in mm (average ± SD) | 24.5 ± 10.9 |
Location | |
Right lobe | 316 (47.5) |
Left lobe | 319 (48) |
Isthmus | 30 (4.5) |
Composition | |
Cystic/ almost completely cystic | 17 (2.6) |
Spongiform | 22 (3.3) |
Mixed | 103 (15.5) |
Solid/almost completely solid | 523 (78.6) |
Echogenicity | |
Anechoic | 17 (2.6) |
Very hypoechoic | 86 (12.9) |
Hypoechoic | 382 (57.4) |
Isoechoic | 154 (23.2) |
Hyperechoic | 26 (3.9) |
Morphology | |
Taller-than-wide | 43 (6.5) |
Other | 622 (93.5) |
Contour | |
Smooth | 576 (86.6) |
Ill-defined | 30 (4.5) |
Lobulated/irregular | 43 (6.5) |
Extra-thyroidal extension | 16 (2.4) |
Echogenic foci | |
None/with comet-tail artifact | 539 (79.5) |
Macrocalcifications | 86 (12.9) |
Peripheral calcifications | 9 (1.4) |
Punctate echogenic foci | 41 (6.2) |
Bethesda classification | |
II | 570 (85.7) |
III | 63 (9.5) |
IV | 30 (3) |
V | 3 (0.5) |
VI | 9 (1.4) |