<unk>  <unk>  is a rare locally aggressive malignant cutaneous soft-tissue sarcoma.<unk>  develops in the connective tissue cells in the middle layer of the skin (dermis). Estimates of the overall occurrence of<unk>  in the United States are 0.8 to 4.5 cases per million persons per year. In the United States,<unk>  accounts for between 1 and 6 percent of all soft tissue sarcomas and 18 percent of all cutaneous soft tissue sarcomas. In the Surveillance, Epidemiology and End Results (SEER) tumor registry from 1992 through 2004,<unk>  was second only to Kaposi sarcoma.
Dermatofibrosarcoma protuberans
Dermatofibroma
Elastofibroma dorsi
Angiokeratoma
Lymphangioma circumscriptum
Chondroid syringoma
Pseudomelanoma
Sarcoma botryoides