DERMATOFIBROSARCOMA PROTUBERANS

• Rare soft-tissue neoplasm in the sarcoma spectrum, especially in the breast (extremities/trunk most common sites)
• Irregular reddish-brown or bluish superficial nodule
• Mammo: circumscribed round/oval mass, typically adjacent to the skin
• US: broad-based against the dermis or lying subQ without visible connection to the skin; heterogeneous echogenicity and moderate vascular flow
• Great prognosis after resection if margins are negative; metastasis uncommon