Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires noted . Stable elevation of the right hemidiaphragm is again seen with chronic right basal atelectasis . Subtle retrocardiac linear density may represent focal areas of scarring as this appears unchanged from prior exam . No convincing signs of pneumonia or CHF . No large effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No acute findings .