Fig. 3From: Primary amelanotic malignant melanoma of the esophagus: a case reporta Histopathological findings at the section, which is located on the yellow line in Fig. 2c (hematoxylin and eosin staining). The tumors were located at the submucosa and exhibited hyperplasia-like epithelioid cells but no melanocytes. Histopathological findings (immunohistochemical staining). b The tumors were diffusely positive for HMB45. c The tumors were partially positive for Melan-ABack to article page