<unk>  protuberans (DFSP) is a rare tumor. There is only about 1 case per million per year. DFSP is a sarcoma, more precisely a cutaneous soft tissue sarcoma.
Dermatofibrosarcoma
Dermatofibroma
Elastofibroma
Chondrosarcoma
Fibrosarcoma
Liposarcoma
Chondromyxoid fibroma
Basal cell carcinoma