{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,2]],"date-time":"2025-08-02T14:28:45Z","timestamp":1754144925741,"version":"3.41.2"},"reference-count":9,"publisher":"Scientific Scholar","content-domain":{"domain":["clinicalimagingscience.org"],"crossmark-restriction":true},"short-container-title":["JCIS"],"abstract":"<jats:p>Saphenous vein graft aneurysm (SVGA) is a rare but potentially life-threatening complication of coronary artery bypass grafting (CABG). Its incidence is likely underreported due to asymptomatic cases and undiagnosed acute events. While SVGAs are more commonly associated with right atrial compression, presentation as a left atrial mass is rare. We present the case of an 85-year-old man with a history of CABG, who was incidentally found to have a left atrial appendage (LAA) density on a computed tomography (CT) chest, abdomen, and pelvis performed for unrelated symptoms of back pain and constipation. The density was initially suspected to be an LAA thrombus. However, a dedicated cardiac CT with delayed-phase imaging revealed a largely thrombosed aneurysmal saphenous vein graft to the obtuse marginal artery, which indented the LAA, mimicking an intracardiac mass. This case underscores the critical role of multimodality imaging, particularly cardiac CT, in differentiating vascular aneurysms from true intracardiac masses. Given the patient\u2019s asymptomatic status, conservative management with close follow-up was pursued. This case adds to the limited literature on SVGAs mimicking left atrial pathology and highlights the importance of recognizing this rare entity to avoid unnecessary interventions. It also emphasizes the evolving role of cardiac CT as a noninvasive, high-yield diagnostic tool for complex post-CABG anatomical assessments.<\/jats:p>","DOI":"10.25259\/jcis_45_2025","type":"journal-article","created":{"date-parts":[[2025,7,16]],"date-time":"2025-07-16T06:00:34Z","timestamp":1752645634000},"page":"26","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Thrombosed saphenous vein graft aneurysm mimicking left atrial appendage mass: A rare complication of coronary artery bypass graft"],"prefix":"10.25259","volume":"15","author":[{"given":"Hunaina","family":"Shahab","sequence":"first","affiliation":[{"name":"Department of Cardiology, Mount Sinai West, Icahn School of Medicine, New York, United States,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jad","family":"Kassem","sequence":"additional","affiliation":[{"name":"Department of Radiology, Mount Sinai West, Icahn School of Medicine, New York, United States,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Yildiz","sequence":"additional","affiliation":[{"name":"Department of Radiology, Mount Sinai West, Icahn School of Medicine, New York, United States,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adam H.","family":"Jacobi","sequence":"additional","affiliation":[{"name":"Department of Radiology, Mount Sinai West, Icahn School of Medicine, New York, United States,"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2025,7,16]]},"reference":[{"key":"10.25259\/JCIS_45_2025\/ref-1","doi-asserted-by":"publisher","first-page":"2236","DOI":"10.1016\/j.jacc.2021.03.009","article-title":"Management of patients with aortocoronary saphenous vein graft aneurysms: JACC State-of-the-art review","volume":"77","author":"Vinciguerra","year":"2021","journal-title":"J Am Coll 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mass","volume":"22","author":"Yatskar","year":"2005","journal-title":"Echocardiography"},{"key":"10.25259\/JCIS_45_2025\/ref-5","doi-asserted-by":"publisher","first-page":"614","DOI":"10.1053\/jcan.2001.26541","article-title":"Pseudoaneurysm of a saphenous vein graft after coronary artery bypass graft surgery: Differential diagnosis of a right atrial mass","volume":"15","author":"Botero","year":"2001","journal-title":"J Cardiothorac Vasc Anesth"},{"key":"10.25259\/JCIS_45_2025\/ref-6","doi-asserted-by":"publisher","first-page":"1414.e1","DOI":"10.1016\/j.echo.2007.06.014","article-title":"Saphenous vein graft aneurysm masquerading as a left atrial mass: Diagnosis by contrast transesophageal echocardiography","volume":"20","author":"Kobulnik","year":"2007","journal-title":"J Am Soc Echocardiogr"},{"key":"10.25259\/JCIS_45_2025\/ref-7","doi-asserted-by":"publisher","first-page":"334","DOI":"10.1016\/S0003-4975(10)66351-5","article-title":"Saphenous vein autograft replacement of severe 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