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Transoesophageal echocardiographic evaluation of the left atrial mass (arrows). (A) Two-dimensional image showing an isoechoic mass with irregular margins attached to the left disc of an atrial septal defect closure device. (B) X-plane imaging of the mass. (C) Three-dimensional image showing the main mass and satellite formations behind the left disc of the closure device. (D) Three-dimensional TrueVue image of the mass.
