Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Heart size is mildly enlarged but unchanged . The mediastinal and hilar contours are similar . Pulmonary vasculature is not engorged . Streaky opacities in lung bases likely reflect areas of atelectasis without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality .