Dermoscopic findings of hemosiderotic dermatofibroma: A comprehensive review

Abstract

Dermatofibroma (DF) is a very common benign skin tumor composed of fibroblasts, histiocytes, capillaries and collagen with multiple clinical presentations and histological variants [1]. DF usually affects female patients at any age between 10 and 75 years old [2-4]. Most of the time it presents as a single, firm papular lesion with a slightly keratotic surface, sometimes brown pigmented or skin tone, and frequently present in the inferior extremities. Almost 6% of all dermatofibromas are associated with trauma [2, 5]. Diagnosis is clinical and dermatoscopic patterns have been described as diagnostic tools. The most common presentation seen in 30-60% of all DF is a central scar-like patch with a peripheral reticular network [2, 3, 5, 6]. Nevertheless, atypical patterns simulating melanomas, vascular tumors or basal cell carcinomas have been described in another variants of DF such as hemosiderotic dermatofibroma [2, 3].