Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The heart size is top normal . The aorta remains tortuous . There is mild pulmonary vascular congestion . Persistent bibasilar parenchymal opacities are re - demonstrated , possibly reflecting chronic aspiration or infection . No large pleural effusion or pneumothorax is present . No acute osseous abnormalities are demonstrated .
    OUTPUT:
    
Chronic bibasilar airspace opacities concerning for recurrent aspiration or infection .