Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Heart is moderately enlarged but unchanged . The aorta is tortuous . The mediastinal and hilar contours are stable . The pulmonary vascularity is not engorged . No focal consolidation , pleural effusion or pneumothorax is identified . Several clips are noted within the upper abdomen . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .