Table 3 Prediction of axillary lymph node (ALN) burden
Number of positive ALN on imaging | PET/CT | MRI | p-value (1) | PET/CT + MRI | p-value (2) | p-value (3) |
|---|---|---|---|---|---|---|
NPV (%) | NPV (%) | NPV (%) | ||||
0 | 73.5 (133/181) | 80.8 (101/125) | 0.138 | 84 (89/106) | 0.041* | 0.531 |
PPV (%) | PPV (%) | PPV (%) | ||||
1 | 24.4 (10/41) | 22.5 (9/40) | 0.841 | 44.4 (4/9) | 0.25 | 0.22 |
2 | 8.7 (3/23) | 30 (6/20) | 0.263 | 33.3 (1/3) | 0.4 | > 0.999 |
1–2 (low burden) | 35.9 (23/64) | 36.7 (22/60) | 0.933 | 55 (11/20) | 0.13 | 0.149 |
0–2 (indicator for SLNB) | 88.6 (217/245) | 95.7 (177/185) | 0.008* | 96.1 (173/180) | 0.005* | 0.834 |