We present the case of an 86 year old woman who was sent for consultation at General Surgery due to asymptomatic tumouration on the back face of the left thigh whose size had increased during the 2 previous months. Physical exploration revealed tumouration that was painless, excrescent, indurated, mobile and well delimited, with a diameter of 5 cm, a reddish colour and a rough surface. 1. F.E.A. Cirugía General. 2. F.E.A. Medicina Interna. Hospital García Orcoyen. Estella. Navarra.