Acral lentiginous melanoma

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Main PageMELANOMAAcral lentiginous melanoma
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 Author(s): Lauren Fried
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Below are dermoscopic features commonly associated with the diagnosis “Acral lentiginous 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 “Palms and Soles”.

Parallel ridge pattern

Linear pigmentation of the ridges.[2]

Irregular diffuse pigmentation

Pigmented blotches of various shades of brown observed in some portions of the lesion.[3]

Multicomponent pattern

Abrupt edge, diffuse pigmentation, peripheral irregular globules and dots, multiple colors, atypical streaks in combination with localized areas exhibiting benign patterns (fibrillar, parallel furrow or lattice-like).[4]

Atypical fibrillar pattern

  1. Fried LJ, Tan A, Berry EG, et al. Dermoscopy Proficiency Expectations for US Dermatology Resident Physicians: Results of a Modified Delphi Survey of Pigmented Lesion Experts. JAMA Dermatol. Published online January 06, 2021. doi:10.1001/jamadermatol.2020.5213
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