Primary angiosarcoma of the spleen - CT, MR, and sonographic characteristics: report of two cases

Primary angiosarcoma of the spleen is a rare entity, but it is the most com mon primary splenic malignancy. These tumors demonstrate an aggressive grow th pattern and can be single or multiple. The diagnosis should be suspected in a patient who presents with splenomegaly but without evidence of lympho ma, malaria, leukemia, or portal hypertension. The tumor may also present w ith acute abdominal symptoms secondary to spontaneous splenic rupture. We d escribe two cases of primary angiosarcoma of the spleen with computed tomog raphic, magnetic resonance, and sonographic features.