Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal chest radiograph was obtained . Lung volumes remain low . The lungs are clear without new consolidation , effusion , or pneumothorax . Bibasilar atelectasis is minimal . Sternotomy wires intact . Pacing leads remain in appropriate locations . Enteric catheter projects over the stomach .
    OUTPUT:
    
Unchanged post-operative appearence .