Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Cardiac silhouette size is top normal . The mediastinal contours are unchanged . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . Moderate degenerative spurring is seen within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .