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Figure 1 (A) Transesophageal echocardiogram in a patient with Saint Jude medical prosthesis in mitral position and without ligation of the left atrial appendage (LAA) (arrows). (B) Postoperative transesophageal echocardiographic study showing the absence of the LAA with complete obliteration of the cavity (arrows). LA = left atrium; P = prosthesis.