Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The hila and pulmonary vasculature are normal . No pleural effusions or pneumothorax . The cardiac silhouette is enlarged but unchanged . The mediastinum is normal . The transvenous pacer is positioned with tip terminating in right atrium and right ventricle . The sternotomy wires are intact without evidence of dehiscence .
    OUTPUT:
    
No acute cardiopulmonary process .