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| No biopsy | Biopsy | FNA | Core biopsy | |
|---|---|---|---|---|
| N=842 | N=1048 | N=230 | N=818 | |
| SLN positivity (HE+IHC) | 253 (30.0%) | 388 (37.0%) | 78 (33.9%) | 310 (37.9%) |
| SLN positivity (HE) | 213 (25.3%) | 340 (32.4%) | 73 (31.7%) | 267 (32.6%) |
| SLN positivity (IHC) | 40 (4.7%) | 48 (4.6%) | 5 (2.2%) | 43 (5.3%) |
