Table 1: Immunohistochemistry Features of Nipple Epidermal Lesions

	Paget cells	Toker cells	Melanoma
Cytokeratin 7	positive	positive	negative
Epithelial membrane antigen	positive	negative	negative
Human milk fat globule	positive	negative	negative
GCDFP-15	positive	negative	negative
CEA	positive	negative	negative
HER2/neu	positive	negative	negative
HMB-45	negative	negative	positive
Melan-A	negative	negative	positive

GCDFP: gross cystic disease fluid protein; CEA: carcinoembryonic antigen; HMB: human melanoma black