Choroidal Melanoma - Amelanotic

A choroidal melanoma originates from a choroidal nevus, or mole. In this photograph, the nevus is indicated by the blue arrow. This slate gray, flat pigmented lesion of the choroid had been observed for a number of years when the elevated, tan colored appendage (shown by the green arrow) developed. When a choroidal melanoma lacks the slate gray color it is termed amelanotic (melanin is the slate gray pigment).