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Figure 2: Orthokeratosis, moderate-to-marked epidermal thinning, effacement of the rete ridges, and focal band-like dense cellular infiltrate of lymphoid cells in upper dermis (a). Hydropic degeneration of basal cells, melanin incontinence, dermal edema with focal exocytosis (arrow), and a few melanophages in the upper dermis (b). Arrows indicate prominent perivascular infiltrate, dilated capillaries, and extravasation of red blood cells within the upper dermis (c) [stain: hematoxylin and eosin (H and E), ×40]. A positive immunohistochemical staining of cells with CD8 surface markers in the upper dermis (d)

Figure 2: Orthokeratosis, moderate-to-marked epidermal thinning, effacement of the rete ridges, and focal band-like dense cellular infiltrate of lymphoid cells in upper dermis (a). Hydropic degeneration of basal cells, melanin incontinence, dermal edema with focal exocytosis (arrow), and a few melanophages in the upper dermis (b). Arrows indicate prominent perivascular infiltrate, dilated capillaries, and extravasation of red blood cells within the upper dermis (c) [stain: hematoxylin and eosin (H and E), ×40]. A positive immunohistochemical staining of cells with CD8 surface markers in the upper dermis (d)