Table 2 The sentinel lymph node demographics for invasive lobular carcinomas and invasive ductal carcinomas

Frozen section analysis of SLN

   Positive

36 (28%)

33 (25%)

69 (26%)

0.622

   Negative

95 (73%)

100 (75%)

195 (74%)

Permanent section analysis of SLN

   Positive

54 (41%)

44 (33%)

98 (37%)

0.171

   Negative

77 (59%)

89 (67%)

166 (63%)

Size of SLN metastasis (mm)

6.0 (0.5–25.0)

5.0 (0.1–32.0)

5.5 (0.1–32.0)

0.808

Classification of metastatic disease

   Macrometastatic (>2.0 mm)

36 (28%)

28 (21%)

64 (24%)

0.378

   Micrometastatic (≤ 2.0 mm)

16 (12%)

12 (9%)

28 (11%)

   Unknown classification

2 (1.5%)

4 (3%)

6 (2%)

   No metastatic disease

77 (59%)

89 (67%)

166 (63%)