A 78-year-old man presented with a mass on his right forearm. A 5 x 4 x 3 cm3 mass was excised en bloc with extensions along
the course of the cephalic vein and its tributaries. Histological analysis revealed the mass to be a high-grade leiomyosarcoma
arising within the cephalic vein. The tumour was controlled locally and distally until the patient died 10 months later, from
an unrelated illness. This is the first reported case of a venous leiomyosarcoma of the cephalic vein.