Atrial septal aneursym Francois Manson, MD Article Published: Apr 8, 2005 2005-04-08-11 Atrial septal aneurysm © Manson www.thefetus.net/ France These are the images of an atrial septal aneurysm. Note the pronounced bulging of the foramen ovale flap into the left atrium. Discussion Board Start a discussion about this article Add bookmark Bookmarked