Histologic changes: Irregular projections of invasive tumor show desmosomes in the nest at the left and a keratin pearl in the nest at the right. A loose stroma with a few lymphoid cells and some hemosiderin-filled macrophages surrounds the nests. In turn, this stroma is surrounded by a denser, fibrous stroma. Again, the cells show the atypia seen in the previous image.

Case 8--Clinical SummaryImage 4

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