Presence of a dual-lead left anterior chest wall pacemaker with leads over the right atrium and right ventricle. Postsurgical changes in the mediastinum compatible with prior coronary artery bypass grafting (CABG) and likely aortic valve replacement. Cardiomediastinal silhouette is enlarged. Pulmonary vasculature is within normal limits.
Pacemaker (Present) Cardiomegaly (Present)