The mainly positive rates of immunohistochemical staining for various tumor markers were 97.2% (35/36) for HMB-45, 97.1% (34/35) for Melan-A, 88.5% (23/26) for SMA, and 86.7%(26/30) for CD34 (Figures 3C–F). Here, PMEL is linked to neoplasm.