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Dermatofibrosarcoma protuberans is a dermal neoplasm of uncertain origin, probably of mesenchymal origin. It grows slowly with ease at locoregional recur, but rarely gives distant metastases (5%). We report the case of a 71-year-old man who consulted for a right inguinal mass of months of evolution that had increased in size gradually. A CT scan showed a nodular lesion in subcutaneous fat tissue without lesions suspicious of distance disemination. It was decided the tumor excision, aiming onlay mass that did not affect the deep planes. The final pathology was consistent with the diagnosis of dermatofibrosarcoma protuberans with nodular sclerotic changes and immunohistochemical study showed positivity for vimentin and CD34. Dermatofibrosarcoma protuberans is a locally malignant tumor of slow growth, and resembles with various pathologies that can develop in the same location, which can lead to making inappropriate treatments, delaying diagnosis and treatment, therefore, the need to raise awareness of this tumor type. [ABSTRACT FROM AUTHOR]

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