Abstract
<jats:p>Dermatofibroma (DF) is one of the most common benign skin neoplasms of fibrohistiocytic origin. The article discusses current concepts of clinical manifestations, histopathological types, as well as dermatoscopic signs and models of DF. The importance of differential diagnostics with other skin tumors, including malignant ones, is emphasized. The main morphological signs of DF include: localized proliferation of spindleshaped fibroblast-like and histiocytoid cells in the dermis, the presence of randomly located coarse collagen fibers, increased angiogenesis and the presence of inflammatory infiltrate. The following main pathohistological types of dermatofibroma are distinguished: fibrocollagenous, sclerotic, cellular, histiocytoid, atypical, lichenoid, keloid, lipidized, hemosiderotic-aneurysmal, epithelioid and atrophic.</jats:p>