Immunoperoxidase stains were performed on a Ventana NEXES Automated Immunohistochemistry System (Fuzhou Maixin Biotech Co., Ltd., Fuzhou, China) Vimentint, HMB45 and Melan A were positive in the tumor cells, while CKp, S-100, SOX-10, and CD68 were negative. This evidence concerns the gene PMEL and neoplasm.