Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged with mild interstitial edema . There are bilateral pleural effusions , left greater than right . A left retrocardiac opacity is noted , possibly reflecting volume loss . No pneumothorax is noted . Chronic deformity of the left shoulder is noted .
    OUTPUT:
    
Cardiomegaly with mild edema and bilateral pleural effusions . Left retrocardiac opacity may reflect atelectasis .