Keloidal dermatofibroma: Report of a rare dermatofibroma variant in a young white woman

摘要

To the Editor: Dermatofibromas (DFs) are banal lesions of the skin predominantly developing on the legs of middle-aged women. Several histopathological varieties of DFs have been described, including fibrocollagenous, storiform, cellular histio-cytoma, lipidized, angiomatous, aneurys-mal, clear cell, granular cell, Halo, DF with 'monster' cells, osteoclastic, myofi-broblastic, myxoid, palisading, atrophic, subcutaneous, and combined DF.1 Keloi-dal DF (KDF) is a rare variant characterized by the presence of keloidal collagen within an otherwise typical DF; it was first described in 19982 and has so far been reported mostly in Asian patients, in whom it represents 0.8%-2.4% of all DFs.2'3 A new case of KDF is reported here; it seems identical to the originally reported cases,2 except that it occurred in a white patient.