A 41-year-old individual with congestive heart failure underwent a sagittal CT reconstruction through Heart (Primary Image). Additional images of axial CT reconstructions through heart are attached. Which of the following is the most likely diagnosis?

Coarctation of the Aorta Mitral Stenosis Cor Triatriatum Patent Ductus Arteriosus *This case is from Docplexus Editorial Team for educative purpose only. Source: LearningRadiology