Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates hyperexpanded lungs with no focal consolidation identified . Redemonstration of prominent interstitial markings bilaterally , present on prior examination dated ___ and unchanged . There is no pleural effusion or pneumothorax . Cardiomediastinal and hilar contours are stable in appearance . Patient is status post dual - lead pacemaker with leads terminating in the right atrium and right ventricle . Patient is status post sternotomy with intact sternotomy wires identified . Osseous structures demonstrate chronic prior rib fractures through the third , fourth and fifth right ribs .
    OUTPUT:
    
No acute intrathoracic abnormality .