Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . There is mild enlargement of the cardiac silhouette with a left ventricular predominance . The mediastinal contours are unremarkable . There is crowding of the bronchovascular structures , but no overt pulmonary edema is present . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .