Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Mild cardiomegaly persists . Mediastinal and hilar contours are unchanged . Patchy opacities in the lung bases are new compared to the previous exam . No overt pulmonary edema is present . There is no pleural effusion or pneumothorax . No acute osseous abnormality is visualized . The right internal jugular central venous catheter has been removed .
    OUTPUT:
    
Interval development of patchy bibasilar airspace opacities which may reflect aspiration or infection in the correct clinical setting .