Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left - sided pacemaker is stable in position with leads extending to the expected positions of the right atrium and right ventricle . The patient is status post median sternotomy . There is minimal left base atelectasis . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . No displaced fracture is seen .
    OUTPUT:
    
No acute cardiopulmonary process .