Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Heart size is normal . The mediastinal and hilar contours are within normal limits . The pulmonary vasculature is normal . Lungs are hyperinflated but clear . No pleural effusion or pneumothorax is seen . Calcified left breast implant is noted .
    OUTPUT:
    
No acute cardiopulmonary process .