Giant aneurysm of the saphenous vein graft presenting as a mediastinal mass: a case report.

We report a patient who presented initially with a diagnosis of a mediastinal mass. During the cardiac catheterization, the patient was diagnosed with a saphenous vein graft aneurysm. We proceeded with a catheter-based intervention resulting in occlusion of the aneurysm. Repeat angiogram after three months showed complete occlusion of the vein graft supplying the aneurysm. We believe that in selected patients with saphenous vein graft aneurysm a catheter-based procedure is feasible and successful.