Amelanotic / hypomelanotic melanoma

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 Author(s): Lauren Fried
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Below are dermoscopic features commonly associated with the diagnosis “Amelanotic / hypomelanotic melanoma”.[1] The example images have been approved by a panel of experts as representative of each given feature.

For a more in-depth discussion of associated features, please see the Dermoscopedia page for “Amelanotic / hypomelanotic melanoma”.

Scar-like depigmentation[edit]

Area of white that is whiter than surrounding normal skin (true scarring). It should not be confused with hypo- or depigmentation due to simple loss of melanin.[2]

Milky red areas[edit]

White shiny lines (crystalline structures)[edit]

Short, white, shiny lines that might be parallel or vertical to one another. Only seen with polarized dermoscopy.[3]

Atypical vascular pattern, polymorphous vessels (2+ types of blood vessels, e.g. linear irregular and dotted vessels)[edit]