Most of splenic aneurysm is located in distal third of the artery and they are saccular, a fact not observed in our case, in which aneurysmatic dilatation, only saccular,( 3 ) evolved to proximal segments of vessels, which seems to characterize the giant aneurysms.( 1 ) Despite of enlarged dimensions, the patient was asymptomatic and aneurysm was found in routine ultrasonography exam of the abdomen, and these finding are compatible with other series.( 4 )