Fig. 6From: Primary malignant melanoma of the esophagus treated with subtotal esophagectomy: a case reportHistopathological findings (immunohistochemical staining). Melanoma-specific antigens melan-A, S-100, and HMB45 are shown by immunohistochemical staining. a Melan-A × 200, b S-100 × 200, c HMB45 × 200. The tumor cells are presented as brown pigment, and melanin is presented as green pigmentBack to article page