[Aneurysm of a saphenous vein aortocoronary graft. Apropos of a case presenting with a presternal mass and review of the literature].

A 61 year old man was admitted with a pulsatile pre-sternal swelling ten years after saphenous vein coronary-artery bypass grafting. The precise diagnosis of this vascular tumor was not established despite various investigations. At reoperation, an aneurysm of the saphenous vein graft, eroding the sternum, was found. This rare complication of saphenous vein coronary artery bypass grafting is described and a review of the literature is presented. Reoperation is mandatory for this uncommon alteration of the saphenous vein graft.