Amelanotic Melanoma Overview

Amelanotic melanoma is a term that indicates any type of melanoma skin cancer that lacks pigmentation. These skin cancers represent a large part of melanomas that can not be diagnosed easily because they don’t have defined characteristics.
The amelanotic melanoma can not be identified by the traditional pattern analysis but requires a screening strategy including special techniques and dermoscopic criteria for the characterization of several non-pigmented skin lesions.

The predictive aspects of this type of melanoma skin cancer include the presence of a bluish-white veil, several gray-blue points, depigmentation with irregular edges, wound type depigmentation, and brown dots or globules irregularly distributed.
The face and feet are the parts of the body where the diagnosis of this type of melanoma is the most underestimated.

Source: http://themelanomaskincancer.com/amelanotic-melanoma-description-and-pictures/