Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . Cardiac silhouette is mildly enlarged but stable in size , and accompanied by mild pulmonary vascular congestion and perihilar haziness as well as peribronchial cuffing and scattered bilateral interstitial opacities . There are no definite pleural effusions .
    OUTPUT:
    
Mild congestive heart failure with minimal interstitial edema . Coexisting viral infection is possible , but there are no lobar areas of consolidation to suggest a bacterial pneumonia .