Ductus arteriosus aneurysm is a saccular or fusiform dilation and elongation of the patent ductus arteriosus (PDA). It can be either congenital or acquired. Their time of presentation can be before or after treatment. In our case, aneurysmal found during her follow-up with cardiologist, it shows itself after a cardiac catheterization for trail of closure after 15 months from first catheterization. So decision was made for surgical closure rather than trial of occlusion with occluder devices. Surgery was performed after nearly one month from catheterization, under general anesthesia and median sternotomy, cardiopulmonary by-pass without complications. In conclude, duct aneurysm may happen in any type of PDA even very restrictive one and should be treated affectively. We conclude that although PDA relatively is common and safe heart defect but they may complicate further with age, even restrictive PDA may complicate by aneurysmal PDA if left untreated and it should be consciously treated.

Keywords: Aneurysm, Catheterization, Patent ductus artriosus