Table 3.
Diagnostic Performance of Each US Feature in the Differentiation of Benign and Malignant Thyroid Nodules in Nodules with Indeterminate Cytology
| Criterion | Sensitivity (%) | Specificity (%) | Positive likelihood ratio | Post-test probability (%)a | Negative likelihood ratio | Post-test probability (%)b |
|---|---|---|---|---|---|---|
| Hypoechogenicity | 49.7 | 56.0 | 1.12 | 11.0 | 0.89 | 8.9 |
| Microcalcifications | 45.6 | 81.9 | 2.52 | 21.8 | 0.66 | 6.8 |
| Central vascularization | 8.4 | 96.0 | 2.13 | 19.1 | 0.95 | 9.5 |
a
Probability of malignancy after having a positive test result.
b
Probability of malignancy after having a negative test result.