Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal . Cardiomediastinal silhouette and hilar contours are normal . A left pacer is unchanged in position with transvenous leads terminating in the right atrium and right ventricle . Lungs are clear . Minimal blunting of bilateral costophrenic angles is suggestive of either tiny effusion or pleural thickening . There is no pneumothorax .
    OUTPUT:
    
Blunting of bilateral costophrenic angles which could represent tiny pleural effusions or pleural thickening . Otherwise normal chest radiograph .