Table 2.
Malignancy rates in ACR-TIRADS,Kwak-TIRADS,EU-TIRADS, C-TIRADS, KTA/KSThR-TIRADS.
| Classification | Total | TN≥10mm | TN<10mm | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B (n) | M (n) | Total (n) | CMR (%) | RMR (%) | CC | P value | B (n) | M (n) | CMR (%) | B (n) | M (n) | CMR (%) | P value | |
| ACR-TIRADS | <0.001 | |||||||||||||
| TR1 | 40 | 0 | 40 | 0 | <2 | 0.442 | 28 | 0 | 0 | 12 | 0 | 0 | 1.000 | |
| TR2 | 145 | 1 | 146 | 0.68 | <2 | 125 | 1 | 0.79 | 20 | 0 | 0 | 1.000 | ||
| TR3 | 54 | 7 | 61 | 11.48 | 2-5 | 31 | 5 | 13.89 | 23 | 2 | 8.00 | 0.763 | ||
| TR4 | 242 | 100 | 342 | 29.24 | 5-20 | 202 | 81 | 28.62 | 40 | 19 | 32.20 | 0.582 | ||
| TR5 | 201 | 306 | 507 | 60.36 | >20 | 157 | 256 | 61.99 | 44 | 50 | 53.19 | 0.116 | ||
| Kwak-TIRADS | <0.001 | |||||||||||||
| 2 | 40 | 0 | 40 | 0 | 0 | 0.502 | 28 | 0 | 0 | 12 | 0 | 0 | 1.000 | |
| 3 | 149 | 1 | 150 | 0.67 | ≤5 | 128 | 1 | 0.78 | 21 | 0 | 0 | 1.000 | ||
| 4A | 98 | 8 | 106 | 7.55 | 5-10 | 69 | 6 | 8.00 | 29 | 2 | 6.45 | 1.000 | ||
| 4B | 136 | 33 | 169 | 19.53 | 10-50 | 110 | 21 | 16.03 | 26 | 12 | 31.58 | 0.033 | ||
| 4C | 246 | 326 | 572 | 56.99 | 50-85 | 195 | 278 | 58.77 | 51 | 48 | 48.48 | 0.600 | ||
| 5 | 13 | 46 | 59 | 77.97 | 85-100 | 13 | 37 | 74.00 | 0 | 9 | 100 | 0.185 | ||
| EU-TIRADS | <0.001 | |||||||||||||
| 2 | 40 | 0 | 40 | 0 | 0 | 0.427 | 28 | 0 | 0 | 12 | 0 | 0 | 1.000 | |
| 3 | 203 | 9 | 212 | 4.25 | 2-4 | 161 | 7 | 4.19 | 42 | 2 | 4.55 | 1.000 | ||
| 4 | 135 | 40 | 175 | 22.86 | 6-17 | 105 | 26 | 19.85 | 30 | 14 | 31.82 | 0.102 | ||
| 5 | 304 | 365 | 669 | 54.56 | 26-87 | 249 | 310 | 55.46 | 55 | 55 | 50.00 | 0.293 | ||
| C-TIRADS | <0.001 | |||||||||||||
| 2 | 44 | 0 | 44 | 0 | 0 | 0.502 | 36 | 0 | 0 | 8 | 0 | 0 | 1.000 | |
| 3 | 187 | 2 | 189 | 1.06 | <2 | 153 | 2 | 1.29 | 34 | 0 | 0 | 1.000 | ||
| 4A | 139 | 28 | 167 | 16.77 | 2-10 | 100 | 16 | 13.79 | 39 | 12 | 23.53 | 0.121 | ||
| 4B | 191 | 112 | 303 | 36.96 | 10-50 | 141 | 95 | 40.25 | 50 | 17 | 25.37 | 0.026 | ||
| 4C | 121 | 263 | 384 | 68.49 | 50-90 | 113 | 224 | 66.47 | 8 | 39 | 82.98 | 0.022 | ||
| 5 | 0 | 9 | 9 | 100 | >90 | 0 | 6 | 100 | 0 | 3 | 100 | 1.000 | ||
| KTA/KSThR-TIRADS | <0.001 | |||||||||||||
| 2 | 74 | 0 | 74 | 0 | <3 | 0.467 | 56 | 0 | 0 | 18 | 0 | 0 | 1.000 | |
| 3 | 210 | 10 | 220 | 4.55 | 3-15 | 166 | 8 | 4.60 | 44 | 2 | 4.35 | 1.000 | ||
| 4 | 171 | 66 | 237 | 27.85 | 15-50 | 142 | 50 | 26.04 | 29 | 16 | 35.56 | 0.200 | ||
| 5 | 227 | 338 | 565 | 59.82 | >60 | 179 | 285 | 61.42 | 48 | 53 | 52.48 | 0.096 | ||
B, benign nodules; M, malignant nodules; TN, thyroid nodule; CMR, calculated malignancy rate; RMR, recommended malignancy risk; CC, correlation coefficient.