US features | Total lymph nodes 767 | Metastatic lymph nodes 329 | Sensitivity (%) | Specificity (%) | P | PPV | NPV |
---|---|---|---|---|---|---|---|
Round shape Short to long Axis (diameter ratio > 0.5) | 235 | 173 | 52.6 | 85.8 | Χ2 130.5 P 0.0000 | 73.6 | 70.7 |
Abnormal echogenicity | 371 | 271 | 82.4 | 77.2 | Χ2 366.5 P 0.0000 | 73 | 85.4 |
Absent Hilum | 512 | 304 | 92.4 | 52.5 | Χ2 170.8 P 0.0000 | 59.4 | 90.2 |
Calcification | 120 | 118 | 35.9 | 99.5 | Χ2 178.5 P 0.0000 | 98.3 | 67.4 |
Cystic change | 79 | 79 | 24 | 100 | Χ2 117.2 P 0.0000 | 100 | 63.7 |
Peripheral vascularity | 313 | 163 | 49.5 | 65.8 | Χ2 18.2 P 0.0000 | 52.1 | 63.4 |
BFI-TS | 309 | 307 | 81.5 | 99.5 | Χ2 673.4 P 0.0000 | 99.3 | 95.2 |