Acral lentiginous melanoma
Below are dermoscopic features commonly associated with the diagnosis “Acral lentiginous melanoma”. 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.
Irregular diffuse pigmentation
Pigmented blotches of various shades of brown observed in some portions of the lesion.
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).
Atypical fibrillar pattern
- 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