Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The heart size is normal . Mediastinal and hilar contours are normal . Pulmonary vascularity is normal . Aside from minimal subsegmental atelectasis in the left lower lobe , the lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .