Dermatofibroma

A 32-year-old woman consulted for this firm pigmented lesion on her left calf.

Dermoscopy revealed a pigmented network with multiple scar-like patches.
Typically the dermoscopic presentation of dermatofibromas consist in a central white scar-like patch with peripheral delicate pigment network. In this case the scar-like depigmentation was in patches and in a asymmetric disposition.

Zaballos et al * found multiple scarlike patches in 12.3% of dermatofibromas with
a scarlike patch and note that Blum and Bauer described a case of melanoma dermoscopically
mimicking a dermatofibroma with 4 central white scarlike patches and a delicate pigment network at the periphery.
* Arch Dermatol. 2008;144(1):75-83

Dermatofibroma.

A 27-year-old woman consulted for a pigmented lesion on her right shoulder.
Dermoscopy revealed multiple white scarlike patches, globule-like structures, and a delicate peripheral pigment network, in favor of a dermatofibroma.


Globule-like structures well seen on this picture (magnification X70).

Other cases of dermatofibromas
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Dermatofibroma

A 36-year-old woman consulted for this firm tumor on her right thigh. Dermoscopy revealed a central white scar-like patch and a delicate light brown network.
The lesion was excised and pathology revealed a dermatofibroma.



Other cases of dermatofibromas
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Dermatofibroma

A 35-year-old woman consulted for a painful firm pigmented tumor clinically in favor of a dermatofibroma.



Dermoscopy revealed a central white scar-like patch surrounded by a pigmented network and many brown globules.




Dermatofibromas have various dermoscopic features.

For more information:

Isil Kilinc Karaarslan et al. Different dermoscopic faces of dermatofibromas. J Am Acad Dermatol 2007;57:401-6

Other cases of dermatofibromas
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