Peripheral reticular pigmentation

In this case of dermatofibroma, we can see a central white patch with a delicate peripheral pigment network. In the former case of dermatofibroma, the pigmentation was not reticulated.

Dermatofibroma, actinic lentigo and flat seborrheic keratosis are the only non-melanocytic lesions which display a pigment network.

Other cases of dermatofibromas
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Dermatofibroma

Typical assciation of a central white patch with a peripheral pigmentation (not reticulated ) in a dermatofibroma

Other cases of dermatofibromas
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Unusual localization of a dermatofibroma

A 53-year-old man consulted for this firm tumor on his 5th left finger. Clinical diagnoses were an acquired fibrokeratoma or a wart.


Dermoscopy revealed a peripheral homogeneous pigmentation and a
central white scarlike patch in favor of a dermatofibroma.

The lesion was excised and pathology confirmed this diagnosis of dermatofibroma.

Dermatofibromas are usually localized on the extremities , shoulders, thighs, buttocks.
Digital localization is rarely reported in the literature*.
Dermoscopy allows a more accurate diagnosis before excision of digital tumors.

* T. Yamamoto et al. Dermatofibroma of the digit: report of six cases.Dermatology 2003; 207:79-81

Other cases of dermatofibromas
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Dermatofibroma

A 65-year-old man consulted for firm pigmented lesion on his right leg.


Dermoscopy featured:

• a central white scarlike patch
• a peripheral pigment network
• ring-like structures

in favor of a dermatofibroma.



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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Dermatofibroma

A 59-year-old patient consulted for a hard lesion on her left leg. The clinical diagnosis of dermatofibroma was suspected.



Dermoscopy confirmed easily the diagnosis of dermatofibroma (or histiocytoma) showing a central white patch and a delicate light brown fine network.

Other cases of dermatofibromas
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Dermatofibroma

This firm tumor on the left leg of a 34-year-old woman is typical of dermatofibroma in dermoscopy with a central white patch and a delicate light-brown pigment network at the peripheryThis firm tumor on the left leg of a 34-year-old woman is typical of dermatofibroma in dermoscopy with a central white patch and a delicate light-brown pigment network at the periphery

Other cases of dermatofibromas
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Central white patch

This is classic case of dermatofibroma with a central white patch with a reticular depigmentation and a fine pigment network at the periphery

Other cases of dermatofibromas
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Dermatofibroma

This woman presented a dermatofibroma on her lower right leg confirmed by a biopsy.
The dermoscopy showed a vascular pattern (*) with a rim of hairpin vessels.
The central white patch was less remarkable than in other cases of dermatofibromas.
Dotted vascular pattern or atypical vascular pattern in dermatofibromas have been reported in the literature (Ferrari et al , Acta Derm Venereol 2004, 84: 164-165)

Dermatofibroma

A 30-year-old woman consulted for this pigmented lesion on her right leg.
Dermoscopy revealed a central white scar-like patch surrounded by a delicate pigmented network, in favor of a dermatofibroma.

Dermatofibroma

A 52-year-old man consulted for a painful, firm light-brown plaque of her right leg


Dermatoscopy: x20
central white patch and delicate pigment network at the periphery are typical dermoscopic signs of dermatofibroma


























Other cases of dermatofibromas
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