Large-Giant Congenital Melanocytic Nevi: Moving Beyond NRAS Mutations.

Large-giant congenital melanocytic nevi have been well characterized clinically, yet questions remain about the heterogenous phenotypes observed. Martins da Silva et al. (2018) highlight the genotypic diversity between "classic" and "spilus-like" congenital melanocytic nevi by analyzing multiple biopsy sites and matching satellite nevi. This study provides evidence for alternative modes of development beyond the well-established NRAS mutation paradigm.