Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The cardiac silhouette size is normal . The aorta is tortuous and calcified . The hilar contours are normal and the pulmonary vascularity is within normal limits . The lungs are clear . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
No acute cardiopulmonary process .