Table 2 Correlation of US findings and SLNB or ALND pathologic results
SLNB findings | 0 metastatic SLN | 1 metastatic SLN | 2 metastatic SLN | More than 2 and ALND performed | Missing | Total |
|---|---|---|---|---|---|---|
US suspicious LNs number | ||||||
 Missing | – | – | – | – | – | – |
 0 LN | 39 (58.2%) | 11 (16.4%) | 3 (4.5%) | 5 (7.5%) | 9 | 67 (69.1%) |
 1 LN | 7 (41.2%) | 1 (5.9%) | 0 | 1 (5.9%) | 8 | 17 (17.5%) |
 2 LNs | 4 (57.1%) | 0 | 0 | 0 | 3 | 7 (7.2%) |
 More than 2 and upfront ALND performed | 0 | 2 (33.3%) | 2 (33.3%) | 2 (33.3%) | 0 | 6 (6.2%) |