First described by Darier and Ferrand in 1984, the dermatofibrosarcoma is a fibrous tumour of the skin with high local malignancy, progressive evolution and great opportunity of recidivism. We report unusual case of Darier-Ferrand dermatofibrosarcoma relapsing of the vulva in a 76-year-old female patient. The clinical examination showed a big, rounded mass with fixed consistence. The surgical resection was complete, passing to 3 cm laterally with economy of healthy tissues that leaves the least of functional and esthetical sequelae. The histological examination of the operative piece confirmed the diagnosis. This case shows the huge nature of the mass, the local aggressiveness of the tumour and the possible difficulties of the complete exeresis of the lesion in significant anatomic region.