The suface cells are often very flattened, and the epidermis may be exceedingly thin or focally eroded. Low power view. Most of the inflammatory cells beneath the epidermis are plasma cells. High power view from the area of the black rectangle. Some of the cells that are migrating into the epidermis are lymphocytes, and a few are PMN's.
Plasma cells are prominent at and beneath the dermoepidermal junction.
High power view from the area of the red rectangle. PMN's, lymphocytes, and plasma cells are at the dermoepidermal junction. The PAS stain did not demonstrate fungi. Pigment incontinence is present. The epithelium is only 3 cell layers thick in one area.