Level 2: Dermatofibromas

From dermoscopedia

Main PageTwo-step algorithmLevel 2: Dermatofibromas
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 Authored by: Ralph P. Braun     ·  Aimilios Lallas     ·  Ashfaq A. Marghoob

 Keywords:   dermatofibroma · histiocytosis · df · two-step algorithm
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Description This chapter describes the dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. criteriameasure of how well one variable or set of variables predicts an outcome of dermatofibromaDermatofibromas are hard solitary slow-growing papules (rounded bumps) that may appear in a variety of colours, usually brownish to tan; they are often elevated or pedunculated. A dermatofibroma is associated with the dimple sign; by applying lateral pressure, there is a central depression of the dermatofibroma.
Author(s) Ralph P. Braun · Aimilios Lallas · Ashfaq A. Marghoob
Responsible author Ash Marghoob→ send e-mail
Status released
Status update September 10, 2018
Status by Ralph P. Braun


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Level 2: Dermatofibromas

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Dermatofibromas (DF) are defined first and foremost by their clinical characteristics of being firm papules that dimple on lateral pressure. A DF with this clinical morphologyThis glossary term has not yet been described. will usually reveal the following features when viewed with dermoscopy: A symmetric lesion with a thin, typical, peripheral networkThis glossary term has not yet been described. with a central white scar-like area. In the region between the network and the central scarlike area one can see ring like globules and vesselsThis glossary term has not yet been described.. When viewed with polarized lightThis glossary term has not yet been described. the central scarlike area will usually manifests a pink hue and will often also reveal shiny white linesstreaksThis glossary term has not yet been described..