Splenic aneurysm with more than 5cm diameter is rarely seen. The giant splenic artery aneurysm, greater than 10cm, is even rare. In 2005 there were only 12 cases of true splenic artery aneurysms described in the literature with such dimensions.( 1 ) Such case requires a careful plan and execution because of its intimal relation with surrounding abdominal organs. In Brazil, no cases of this disease have been reported so far.