Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual - lead left - sided pacemaker is seen , unchanged in position , with leads extending to the expected positions of the right atrium and right ventricle . The patient is status post median sternotomy . The lungs remain relatively hyperinflated . There is minimal left base atelectasis / scarring . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac silhouette is top normal . Mediastinal and hilar contours are stable . There is no overt pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary process .