A rare case of atrophic dermatofibroma with dermoscopic findings

Abstract

Background: Dermatofibroma, also known as cutaneous benign fibrous histiocytoma, is a common skin tumour.

Aim: The aim of this paper was to present a rare variant of dermatofibroma, atrophic dermatofibroma, emphasizing histopathological and dermoscopic features.

Patients/methods: A case of atrophic dermatofibroma in a female patient with the characteristic histopathological features and newly demonstrated dermoscopic findings is presented.

Results: A 54-year-old female presented with a depressed reddish lesion on the back showing histopathological findings of atrophic dermatofibroma. The dermoscopy of the lesion revealed a peripheral pigment network surrounding a pink-reddish colouration around a central whitish scar-like patch with white-yellow scales which was not an exact match with the description in the literature.

Conclusion: Atrophic dermatofibroma is a rare variant that presents as an atrophic, depressed skin lesion which can easily be overlooked. Atrophic dermatofibroma should be considered in the differential diagnoses of atrophic, depressed lesions on the upper body of middle-aged women. The case of atrophic dermatofibroma presented here showed typical histopathologic findings with atypical dermoscopic features.

Keywords: atrophy; dermatofibroma; dermoscopy.