Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal and the lungs are clear . No pleural effusion or pneumothorax is visualized . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .