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Medical Definition of Dermatofibrosarcoma protuberans
1. A relatively slowly growing dermal neoplasm consisting of one or several firm nodules that are usually covered by dark red-blue skin, which tends to be fixed to the palpable masses; histologically, the neoplasm resembles a cellular dermatofibroma with a pronounced storiform pattern; metastases are unusual, but the incidence of recurrence is fairly high. (05 Mar 2000)