Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two portable views of the chest . Left chest wall dual - lead pacing device is again seen . Median sternotomy wires are noted . Aortic valve replacement is also visualized . Large hiatal hernia is seen . The lungs elsewhere are essentially clear . There is mild blunting of the right costophrenic angle , potentially due to atelectasis given lower lung volumes . Cardiac silhouette is stable in configuration . Multiple old healed right rib fractures are identified .
    OUTPUT:
    
No definite acute cardiopulmonary process .