blue-nevus-like-melanoma

Two subtypes Melanoma arising in a pre-existent blue nevus (common or more often cellular) or denritic melanocytosis including nevus of Ota, Ita & pilar neurocristic hamtoma Melanoma in which blue nevus-like features (dendritic cells & melanophages) are seen within a spindled or epithelioid melanoma Clinical features •Usually slowly growing tumors •Predilection for the scalp •M>F •No age predilection & exceptionally, lesions can develop in children…