方法和结果组织病理显示表皮棘层肥厚,真皮上部为细网状胶原纤维增殖和局灶性黏蛋白沉积,细小血管和神经纤维成分增多,弹力纤维增殖限局于毛囊和表皮突周围。

• Methods and Results Histopathology showed acanth osis of epidermis,proliferation of fine reticulate collagen fibers and depositi on of focal mucinous proteins in upper dermis. Small blood vessels and nerve fib ers were increased,and proliferation of elastic fibers was localized in the hai r follicles and around some rete ridges.