Melanoma (overview of features)
Below are dermoscopic features commonly associated with the diagnosis “Melanoma (overview of features)”.[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 “Melanoma (overview of features)”.
Atypical pigment network
Black, brown, or gray network with irregular holes and thick lines.[2]
Blue structures (blue-white veil, blue-gray structures)
Blue-white veil: structureless areas of confluent blue color with an overlying white “ground glass” film.[3]
White shiny lines (crystalline structures)
Short, white, shiny lines that might be parallel or vertical to one another. Only seen with polarized dermoscopy.[4]
Negative network
Interconnecting hypopigmented lines that surround irregularly shaped globules or vessels.[5]
Irregular dots/globules
Black or brown round-to-oval, variously sized structures, irregularly distributed within the lesion.[6]
Irregular streaks (radial streaming, pseudopods)
Radial lines with or without a bulbous projection at their ending (with projection = pseudopods. without projection = streaks), irregularly distributed at the periphery of the lesion.[7]
Regression structures (white scar-like area and/or peppering)
Clinically flat region of a lesion with i) white scar-like depigmented areas and/or ii) blue-gray pepper-like granules.[8]
Peripheral brown structureless area
Angulated lines (extrafacial)
Pigmented lines angulated to one another, tending to form polygonal geometric shapes such as complete or incomplete rhomboids.[9]
Atypical vascular pattern, polymorphous vessels (2+ types of blood vessels, e.g. linear irregular and dotted vessels)
Atypical blotch
Black, brown, or gray structureless areas with asymmetric distribution within the lesion.[10]
- ↑ 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
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
- ↑ https://dermoscopedia.org/Superficial_Spreading_Melanoma
