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Patent foramen ovale (PFO) associated with an atrial septal aneurysm (ASA) depicted by transoesophageal echocardiography (left panel) and angiography (right panel). The atrial septal aneurysm bulges into the left atrium (LA) after a sustained Valsalva manoeuvre allowing for a shunt into the left atrium (LA). The inset shows the situation after PFO closure with a 25 mm Amplatzer PFO occluder.
