A Plaque-Like CD34-Positive Dermal Fibroma Presenting as an Acquired Papule.

CD34-positive dermal fibromas (PDFs) are cutaneous neoplasms that display a characteristic pattern of superficial dermal spindle cell proliferation on histopathology evaluation. They are clinically heterogenous in presentation and thought to follow a benign course. CD34-PDFs have features that overlap with dermatofibrosarcoma protuberans (DFSP), a locally aggressive low-grade superficial sarcoma. Cytogenetic studies are essential to distinguish the two. This report presents the case of a 38-year-old female with a CD34-PDF on the right antecubital fossa.