Figure 2

The histological and immunohistochemical examinations of the patient with ACD. (A) H&E staining indicated hyperkeratotic epidermis and amorphous eosinophilic masses in the papillary dermis. (original magnification × 40). (B) Congo red staining indicated positive for eosinophilic masses. (original magnification × 100). (C) The immunohistochemical examination indicated negative for HMB-45. (original magnification × 100)