Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dual lead left - sided pacemaker is seen with leads extending to the expected positions of the right atrium and right ventricle . There is left base atelectasis . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable with the cardiac silhouette enlarged . The lungs are hyperinflated suggesting chronic obstructive pulmonary disease . Surgical clips are seen over the upper abdomen .
    OUTPUT:
    
Likely left base atelectasis . Otherwise , no acute cardiopulmonary process .