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Figure 1: Transthoracic echocardiography showing large left atrial appendage aneurysm (with a relatively narrow neck of 1.3 cm diameter) lateral to the heart within the pericardial space, indenting the anterolateral wall of the left ventricle. A large thrombus (3 cm diameter) is seen inside the aneurysm

Figure 1: Transthoracic echocardiography showing large left atrial appendage aneurysm (with a relatively narrow neck of 1.3 cm diameter) lateral to the heart within the pericardial space, indenting the anterolateral wall of the left ventricle. A large thrombus (3 cm diameter) is seen inside the aneurysm