Table 7.
Features of risk factors of non-hypovascular thyroid nodules in the validation cohort.
| Parameters | Assignment | Benign (n=52) | Malignant (n=49) | |
|---|---|---|---|---|
| Conventional ultrasound features | ||||
| Margin | X4 | |||
| Regular | 0 | 39(75.0) | 8(16.3) | |
| Irregular | 1 | 13(25.0) | 41(83.7) | |
| Micro-calcification | X5 | |||
| No | 0 | 41(78.8) | 17(34.7) | |
| Yes | 1 | 11(21.2) | 32(65.3) | |
| Contrast-enhanced ultrasound features | ||||
| Ring enhancement | X9 | |||
| Present | 0 | 30(57.7) | 6(12.2) | |
| Absent | 1 | 22(42.3) | 43(87.8) | |
| Centripetal enhancement | X11 | |||
| No | 0 | 47(90.4) | 30(61.2) | |
| Yes | 1 | 5(9.6) | 19(38.8) | |
| Wash-out | X13 | |||
| Synchronous | 0 | 12(25.0) | 13(26.5) | |
| Later | 1 | 10(19.2) | 6(12.2) | |
| Earlier | 2 | 29(55.8) | 30(61.2) | |