Cardiac CT angiography of a membranous ventricular septal aneurysm short title: Ventricular septal aneurysm

Abstract

The most frequent congenital heart defects in the neonatal period are ventricular septal defects. Ventricular septal aneurysms can rarely develop from an interventricular septal (IVS) defect in adults. We describe a 47-year-old man with an aneurysm in the IVS growing towards the right ventricle, which was confirmed by cardiac computed tomographic angiography and was missed by echocardiography.