Aneurysm of a saphenous vein aortocoronary graft.

A 79-year-old male who underwent coronary artery bypass graft surgery (free LIMA, two vein grafts) in 1990 was admitted with exertional dyspnea. A chest computed tomography (CT) revealed a solid lingular mass (Fig. 1), which, on CT-guided biopsy, was shown to be an adenocarcinoma. In addition, there was a large bilobed, partially thrombosed aneurysm of the obtuse marginal vein graft (Fig. 2). A 3D volume-rendered reconstruction showed a 5.8 cm 6.2 cm superior lobe and a 8.7 cm 6.6 cm inferior lobe aneurysm (Fig. 3). Following a diagnostic mediastinoscopy, he developed pulmonary edema and persistent hypoxemia, and therefore surgical correction of the aneurysm was not pursued.