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Figure 3: Cytokeratin 7 also highlights the intraepidermal component (microscopic Paget's disease) at the surface of the biopsy (left, ×100). Cytokeratin 7 highlights the ectopic breast tissue in the deep aspect of the skin biopsy, containing in situ and invasive breast carcinoma (right, ×200)

Figure 3: Cytokeratin 7 also highlights the intraepidermal component (microscopic Paget's disease) at the surface of the biopsy (left, ×100). Cytokeratin 7 highlights the ectopic breast tissue in the deep aspect of the skin biopsy, containing in situ and invasive breast carcinoma (right, ×200)