Figure 5: Histologic features; A) low-power view of the neoplasm, hematoxylin-eosin, x100; B) high-power view illustrating the cytologic features of the tumor cells, hematoxylin-eosin, x400; C) positive immunostaining of the tumor cells for Melan-A antigen, automated immunohistochemistry, x400; (courtesy of Prof. Prodromos Chitiroglou, Pathology Department, Aristotle University of Thessaloniki, Greece)