Primary spleen angiosarcoma is a malignant neoplasia based on vascular tissue and it is a rare tumor (65 cases published). The clinical aspects are obscure and the specific diagnosis is made by laparotomy. The prognosis is very poor in any case and survival isn't more than two years, whenever the spleen undergoes spontaneous rupture in which case the survival should be less than six months. The splenectomy before rupture could increase survival. Patients with or without metastatic disease may be treated by chemotherapy but with poor results. Radiotherapy is used for relief the pain produced for bone metastasis.