What is a cellular dermatofibroma?

What is a cellular dermatofibroma?

Cellular dermatofibromas are a type of dermatofibroma (noncancerous tumor). They appear as firm bumps (nodules), often on your legs.

Cellular dermatofibromas extend deeper into your skin’s layers than other dermatofibromas. Usually, dermatofibromas are superficial, meaning they grow on the top layer of skin (epidermis). Cellular dermatofibromas often grow down to subcutaneous tissue, the deepest layer of your skin.

Compared to other dermatofibromas, cellular dermatofibromas are more likely to come back (recur) after treatment. In about 1 in 10 people, cellular dermatofibromas cause necrosis in the tumor. Necrosis is tissue or cell death in a certain area of your body.