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Characteristics of contrast-enhanced ultrasound of benign and malignant thyroid nodules.
| Enhancement characteristics | Malignant (n=66) | Benign (n=43) | χ2 | P-value |
|---|---|---|---|---|
| Margin | 51.47 | <0.001 | ||
| Well-defined | 15 | 40 | ||
| Poorly-defined | 51 | 3 | ||
| Shape | 44.91 | <0.001 | ||
| Regular | 15 | 38 | ||
| Irregular | 51 | 5 | ||
| Area | 7.024 | <0.008 | ||
| <50% | 16 | 21 | ||
| ≥50% | 50 | 22 | ||
| Intensity | 52.63 | <0.001 | ||
| High | 7 | 20 | ||
| Equal | 6 | 19 | ||
| Low | 53 | 4 | ||
| Type | 10.23 | 0.006 | ||
| Heterogeneous | 53 | 4 | ||
| Homogeneous | 7 | 26 | ||
| Ring | 6 | 13 |
