Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart is mild to moderately enlarged . The mediastinal and hilar contours are probably unchanged allowing for differences in technique . There is a mild interstitial abnormality suggesting interstitial edema . Otherwise , the appearance is unremarkable . There may be trace bilateral pleural effusions , more suggested on the left .
    OUTPUT:
    
Findings suggesting mild vascular congestion .