Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The cardiac , mediastinal and hilar contours appear unchanged . Trace pleural effusions are suspected . The chest is hyperinflated . There is mild peribronchial cuffing and a slight interstitial process .
    OUTPUT:
    
Slight suspected interstitial process , although not striking , probably mild fluid overload .