Table 4.
Clinical feature | Sensitivity | Specificity | PPV | NPV |
---|---|---|---|---|
Any suspicious feature in thyroid bed nodulea | 0.80 | 0.52 | 0.12 | 0.97 |
Microcalcifications in thyroid bed nodule | 0.74 | 0.56 | 0.28 | 0.90 |
Increased vascularity in thyroid bed nodule | 0.75 | 0.54 | 0.21 | 0.93 |
Avascular thyroid bed nodule | 0.19 | 0.47 | 0.30 | 0.87 |
Other abnormal cervical lymph nodes | 0.74 | 0.53 | 0.17 | 0.94 |
Rising serum Tg | 0.77 | 0.55 | 0.24 | 0.93 |
Combination of any suspicious features, other abnormal cervical lymph nodes, and rising serum Tg | 0.88 | 0.31 | 0.11 | 0.96 |
Suspicious features defined as microcalcifications, hypoechogenicity, or increased vascularity in any thyroid bed nodule.
PPV, positive predictive value; NPV, negative predictive value.