Table 3 The histological findings in a subcohort of patients with a sentinel lymph node different from a marked lymph node with false-negativity rates

Negative

31 (68.9%)

23 (51.1%)

ITC

1 (2.2%)

1 (2.2%)

Micrometastasis

2 (4.4%)

6 (13.3%)

Macrometastasis

11 (24.4%)

15 (33.3%)

False-negative

8 (4 micrometastasis, 4 macrometastasis)

0

True-positive

13

21

False-negativity rate for micrometastasis and macrometastasis (from the ypN + subcohort, n = 83)

9.6%

0.0%

False-negativity rate for macrometastasis only (from the ypN + subcohort, n = 83)

4.8%

0.0%

Total

45 (100%)

45 (100%)