Table 3.

IHC staining for micrometastasis in patients with HE-negative SLNs (n = 47)

ICH staining	SLN
Negative	35
Positive	12*

IHC, immunohistochemistry; HE, hematoxylin-eosin; SLN, sentinel lymph node.

*Patients with positive ICH staining, of whom 4 of 12 had HE-negative stained lymph nodes and 8 had HE-negative stained SLNs but HE-positive stained non-SLNs at primary HE staining.