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(a) Skin biopsy from bullous lesion showed subepidermal vesicle-filled with lymphocytes, few eosinophils, and proteinaceous fluid (H and E, ×10). (b) Skin biopsy from poikilodermatous skin showed thinned-out epidermis with loss of rete ridges. Superficial dermis showed dilated capillaries and melanin pigment incontinence. (H and E, ×10)
