PMC8488418_01
Reticulated, reddish-brown pigmented patch with hyperkeratotic papules and small plaques on the right knee of a female patient.
cde-0013-0184-g01.jpg
PMC8488418_01_cde-0013-0184-g01.jpg
F1
Histopathology of EAI. Epidermis showing acanthosis, mild atypia of basal cells, hypergranulosis and orthohyperkeratosis, rare dyskeratotic cells, pigment incontinence and vacuolar degeneration of the basal layer (H&E, magnification x10) (a), interface dermatitis, apoptotic keratinocytes, slightly dilated blood vessels with perivascular lymphocytic infiltration within the papillary dermis (H&E, magnification x20) (b).
cde-0013-0184-g02.jpg
PMC8488418_01_cde-0013-0184-g02.jpg
F2
Dilated blood vessels with inflammatory cells were found in the papillary dermis (Fig. 2a, b).