[Saphenous vein graft aneurysm after coronary artery bypass grafting surgery presenting with chronic heart failure].

An 82-year-old woman with a history of a coronary artery bypass grafting (CABG) 10 years prior was admitted because of general fatigue, appetite loss and systemic edema. She presented with a right pericardial mass on chest radiography. Echocardiogram and computed tomography (CT) revealed a 6.0 x 7.0 cm saphenous vein graft aneurysm (SVGA) compressing both right atrium and the right ventricle. She was successfully treated with the aneurysmal resection and postoperative course was uneventful. Although SVGA is an unusual complication after CABG, we recommend that any patient with a history of previous CABG who presents with a mediastinal mass should be evaluated for possibility of SVGA.