Recurrent Dermatofibrosarcoma Protuberans of Scalp in a Distant Location 10 Years after Primary Excision.

Dermatofibrosarcoma protuberans (DFSP) is a slow growing low-grade cutaneous sarcoma. Local recurrence after excision is common due to the poorly defined periphery that renders histological control of surgical margin difficult, Mohs micrographic surgery is the optimal method for treatment. A 41 years old male patient, who had a previous history of DFSP, came to our dermatology clinic for evaluation of an asymptomatic firm flesh-colored nodule on the forehead. Total excision biopsy was done and the mass was histologically proved as DFSP. Wide excision with reconstruction was performed and showed no sign of recurrence till 18-month follow up. Local recurrence is known to be common for DFSP but a new visible lesion distant from the initial site may be confused as a de novo lesion or a benign neoplasm especially in scalp area, and thus interrupt early detection of DFSP. Herein, we report a case of recurrent DFSP of scalp which recurred distant from the original lesion.