Angiokeratoma

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 Author(s): Ignacio Gómez Martín, Pedro Zaballos

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Description	This chapter describes dermoscopy of angiokeratoma
Author(s)	Pedro Zaballos · Ignacio Gómez Martín
Responsible author	Pedro Zaballos → send e-mail
Status	unknown
Status update	August 5, 2017
Status by	Ralph P. Braun

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Angiokeratomas are acquired vascular lesions that present as shiny, soft, dark red to violaceous, 2–10 mm papules which may develop a blue-violaceous to black color and a surface scale. Four clinical subtypes of angiokeratomas have been described: solitary angiokeratoma (the most common type), angiokeratoma of Mibelli, angiokeratoma of Fordyce, and angiokeratoma corporis diffusum.

Dermoscopy:

• Dark lacunae: sharply demarcated, ovoid structures with a dark blue, dark violaceous or black color.
• Blue-White veil: confluent blue pigmentation with an overlying whitish haze.
• Ulceration and surface scale may be present.
• Rarely, rainbow pattern may be present.

References