Nevoid Melanoma - The Unique Histological and Immunohistochemical Appearance

Nevoid melanoma is a rare tumor with the origin in melanin-producing cells called melanocytes. The main particularity of this is
 resemblance benign tumor, compound intradermal nevi, despite malignant behavior and aggressivity. On usual stain, we generally observe tumoral proliferation solid architecture, organized nests. cytological atypia observed high power fields; pagetoid migration common. cases described so far literature are limited incidence has not been established due to variety diagnostic definitions for particular tumor.