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Case Reports
. 2016 May-Jun;91(3):354-6.
doi: 10.1590/abd1806-4841.20164031.

Dermatofibroma simulating seborrheic keratosis dermoscopically

Daniel Holanda Barroso  1 , Camila Pinon Zoby Leite  1 , Gabriela Diniz de Souza Araujo  1 , Márcia Almeida Galvão Teixeira  1 , Eliane Ruth Barbosa Alencar  1 , Silvana Maria de Morais Cavalcanti  1
Affiliations
Case Reports

Dermatofibroma simulating seborrheic keratosis dermoscopically

Daniel Holanda Barroso et al. An Bras Dermatol. 2016 May-Jun.

Abstract

Dermatofibroma is a frequent benign tumor of easy clinical diagnosis in most cases, but that can mimic other dermatoses. Dermoscopy may help to define the diagnosis and its classical pattern is a central white area, similar to a scar, surrounded by a discrete pigment network. However, dermoscopic findings are not always typical. We describe here a case of dermatofibroma exhibiting ridges, furrows and pseudocomedos, a pattern which is typical of seborrheic keratosis, in dermoscopy.

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Conflict of interest statement

Conflict of Interest: None.

Figures

Figure 1
Figure 1
Elevated lesion measuring 1.5 x 1 cm on right calf
Figure 2
Figure 2
Dermoscopy showing pattern of ridges, furrows and pseudocomedos (arrow points)
Figure 3
Figure 3
Presence of fusocelular skin tumor sparing the upper dermis. The epidermis shows acanthosis, hyperkeratosis and kera tin-filled invaginations (asterisk) (hematoxylin-eosin, x40)
Figure 4
Figure 4
Many of the neoplastic cells present cytoplasm of foamy aspect (arrow points). Hematoxylin-eosin, x400
See this image and copyright information in PMC

References

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