Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . A left pectoral pacemaker device is present with leads terminating in the right atrium and right ventricular apex . Patient is status post median sternotomy . The lungs are hyperinflated with prominent interstitial markings bilaterally . No focal opacity is identified . The cardiac silhouette is moderately enlarged . There is no pleural effusion or pneumothorax . There is evidence of prior ___ through 5th rib fractures on the right .
    OUTPUT:
    
Hyperinflated lungs with prominent interstitial marking , which may represent chronic interstitial lung disease or possible interstitial edema . No focal opacity is identified .