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Initial three-dimensional (3D) transesophageal echocardiogram (TOE). A Magnified multiplane 3D TOE did not detect a patent left atrial appendage in its normal position (arrowheads). B Color Doppler unable to detect flow from the usual left atrial appendage location (arrowhead). LA, left atrium; LOM, ligament of Marshall; LV, left ventricle
