Table 3 Diagnostic performances of US features for malignant thyroid nodules
From: Ultrasound microflow patterns help in distinguishing malignant from benign thyroid nodules
US Features | Malignant Group (%) | Benign Group (%) | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|---|---|
Solid composition | 122 (97.6) | 74 (60.2) | 0.976 | 0.398 | 0.622 | 0.942 | 0.690 |
Hypoechogenicity or very hypoechogenicity | 119 (95.2) | 82 (66.7) | 0.952 | 0.333 | 0.592 | 0.872 | 0.645 |
Irregular margin or extrathyroidal extension | 44 (35.2) | 7 (5.7) | 0.352 | 0.943 | 0.863 | 0.589 | 0.645 |
Taller-than-wide shape | 59 (47.2) | 10 (8.1) | 0.472 | 0.919 | 0.855 | 0.631 | 0.694 |
Microcalcification | 84 (67.2) | 9 (7.3) | 0.672 | 0.927 | 0.903 | 0.735 | 0.798 |
Penetrating vessel ≥ 1 | 103 (82.4) | 38 (30.9) | 0.824 | 0.691 | 0.730 | 0.794 | 0.758 |
Crab claw-like pattern | 80 (64.0) | 13 (10.6) | 0.640 | 0.894 | 0.860 | 0.710 | 0.766 |
Root hair-like pattern | 10 (8.0) | 3 (2.4) | 0.080 | 0.976 | 0.769 | 0.511 | 0.524 |