The punch biopsy specimen from the border demonstrated hyperkeratosis, focal hypergranulosis, and irregular acanthosis. There was a dense, bandlike infiltrate of lymphocytes along the basal layer and papillary dermis. Scattered melanophages and colloid bodies were seen just below the epidermis. The punch biopsy specimen from the center of the plaque revealed marked epidermal atrophy with loss of the rete ridges. There was also a striking paucity of elastic fibers in the papillary dermis.