Diagnostic sensitivity, specificity, PPV, NPV, and accuracy of the individual US features suggesting CBCNsa
| Characteristics | No. (%) | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|---|
| Ovoid-to-round | 13 (100) | 100 | 39 | 45 | 100 | 59 |
| Ill-defined margin | 11 (85) | 85 | 77 | 65 | 91 | 80 |
| Inner isoechoic rim | 11 (85) | 85 | 81 | 69 | 91 | 82 |
| Low-echoic halo | 10 (77) | 77 | 89 | 77 | 89 | 85 |
Note:—PPV indicates positive predictive value; NPV, negative predictive value.
↵a Data are percentages.