Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is stable , mild to moderately enlarged . Mediastinal contours are stable and unremarkable . No large pleural effusion is seen although a trace pleural effusion be difficult to exclude . Subtle prominence of the interstitial markings suggests minimal to mild interstitial edema . No pneumothorax is seen .
    OUTPUT:
    
Suggestion of minimal to mild interstitial edema