[Darier-Ferrand dermatofibroma. An unusual tumor of the soft tissues].

Darier and Ferrand dermatofibroma is a rare skin tumour arising in the dermal connective tissue. It has a slow course over several years and presents very unusual histological features. It is characterised by a marked potential for local recurrence, frequently multiple due to insufficient primary resection. It has a very low metastatic potential. Its diagnosis is difficult but essential in order to perform an appropriate surgical procedure which ensures its excellent prognosis.