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Figure 2: Histopathological examination of skin biopsy: (a) fibrinoid necrosis in the small capillary walls and polymorphonuclear leukocytes infiltrating the vascular wall (H and E, ×400); (b) basket-like hyperkeratosis and mild acanthosis in the epidermis. Fibrinoid necrosis in the small capillary walls, polymorphonuclear leukocytes infiltrating the vascular wall, edema, and erythrocyte extravasation in the papillary dermis (H and E, ×100)

Figure 2: Histopathological examination of skin biopsy: (a) fibrinoid necrosis in the small capillary walls and polymorphonuclear leukocytes infiltrating the vascular wall (H and E, ×400); (b) basket-like hyperkeratosis and mild acanthosis in the epidermis. Fibrinoid necrosis in the small capillary walls, polymorphonuclear leukocytes infiltrating the vascular wall, edema, and erythrocyte extravasation in the papillary dermis (H and E, ×100)