Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear without confluent consolidation . There is no overt interstitial edema or large pleural effusions . Cardiomediastinal and hilar contours are exaggerated due to the AP technique , though mild cardiomegaly is likely and appears unchanged . Numerous mediastinal surgical clips are noted . Median sternotomy wires appear intact . There is no pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process