TEE image 2 of the first patient. TEE image demonstrating an atrial septal aneurysm protruding into the right atrium (white arrow) and a gap between the septa consistent with patent foramen ovale (green arrow). Septum primum appears very thin in this image. LA – Left Atrium; RA – Right Atrium; LV – Left Ventricle; RV – Right Ventricle.