CTICasesSaphenous vein graft aneurysm
Imaging findings
Chest radiograph shows a smooth, well-defined mediastinal mass in the right cardiophrenic angle in a patient with a prior median sternotomy. Contrast-enhanced CT chest confirms a giant, partially calcified aneurysm of a saphenous vein graft compressing the right atrium and ventricle.
Key takeaways
Saphenous vein graft aneurysms are a rare, late complication of coronary artery bypass graft surgery, usually presenting 10-20 years post-operatively. They can manifest as incidental mediastinal masses on radiographs or cause compression of adjacent cardiac chambers, and they carry a high risk of rupture or thrombosis.
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