Dermatofibrosarcoma Protuberans Arising in a Digit: A Case Report.

Dermatofibrosarcoma protuberans (DFSP) is a rare slow-growing soft tissue sarcoma that is usually found on the trunk or extremities. This report highlights an exceedingly rare case in which a DFSP arose on the digit of a 43-year-old man. Clinical and histologic analysis revealed an atypical CD34-positive tumor with differentials including DFSP and multiple similar entities.