<s>[INST] <<SYS>> This is a medical question of type : inheritance <</SYS>> Is dermatofibrosarcoma protuberans inherited ? [/INST] Dermatofibrosarcoma protuberans results from a new mutation that occurs in the body's cells after conception and is found only in the tumor cells. This type of genetic change is called a somatic mutation and is generally not inherited. </s>