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  • Title: Saphenous vein graft aneurysm masquerading as a left atrial mass: diagnosis by contrast transesophageal echocardiography.
    Author: Kobulnik J, Hutchison SJ, Leong-Poi H.
    Journal: J Am Soc Echocardiogr; 2007 Dec; 20(12):1414.e1-4. PubMed ID: 18054703.
    Abstract:
    We describe the first reported case of a saphenous vein graft aneurysm mimicking a left atrial (LA) mass on echocardiographic imaging in a 62-year-old man 22 years after coronary bypass surgery. On presentation with worsening angina, a transthoracic echocardiogram revealed a LA mass. Coronary angiography showed severe native coronary artery and graft disease. The saphenous vein graft to the first obtuse marginal branch of the left circumflex coronary artery appeared ectatic and aneurysmal and was diffusely diseased. Transesophageal echocardiography demonstrated a well-circumscribed mass apparently within the LA, with an area of central echolucency and a surrounding crescentic region of increased echodensity, with absent flow by color and spectral Doppler techniques. After an intravenous bolus injection of Definity, the area of central echolucency within the mass was opacified compatible with a vascular origin. Pulsatile contrast flow was seen predominantly in diastole consistent with a coronary arterial flow pattern. Thus, contrast transesophageal echocardiography confirmed the diagnosis of a saphenous vein graft aneurysm invaginating the lateral aspect of the LA, mimicking a true LA mass, highlighting a novel use for this technology.
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