Saphenous Vein Graft Aneurysms Demonstrated by Computed Tomography

Abstract: A case of aneurysms of saphenous vein coronary artery bypass(CAB) grafts is presented with CT and echocardiography findings. Aneurysms of the bypass graft are rare complications of CAB surgery but many occur due to atherosclerosis, infection, surgical technique, or vasculit is. Index Terms: Arteries, coronary bypass graft-Pseudoaneurysm-Computed tomograpy. Late complications of coronary artery bypass(CAB) surgery include progression of atheroscle-rosis at the anastomotic site, anastomotic stric-tures, intercoronary artery steal syndrome, coro-nary arteriovenous fistulas, proximal dissections of the aorta, and pseudoaneurysms at the proximal and distal anastomotic sites (l-5). True saphenous vein graft aneurysms are exceedingly rare but have been reported secondary to progression of athero-sclerosis or mycotic infection (6-8). Computed to-mography demonstrates aneurysms of the medias-tinal great vessels with high accuracy and has been used to evaluate patency of CAB grafts (9). We re-port CT findings of fusiform aneurysms in aorto-coronary saphenous vein grafts in a patient with a nonspecif ic vascul i t is. CASE REPORTS A 23-year-old woman first presented at l2 years ofage with hematuria and rising blood urea nitrogen and serum creatinine levels. A renal biopsy revealedi vascul i t is of unknown el iology with marked parenchymal scarr lng. The patient's renal function improved on sieroid therapy. At. age 18, the patient developed unremitt ing angina re-quir ing three vessel CAB graft ing with saphenous veins. Histological examination of the coronary arteries demon