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 , unchanged . Mediastinal and hilar contours are similar . Pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is demonstrated in the left lung base . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .