Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs again demonstrate median sternotomy wires and CABG clips . The lungs are clear with the exception of mild septal thickening in the right lower lobe . The cardiomediastinal silhouette is normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .