Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in pulmonary edema with residual interstitial edema remaining . Cardiac silhouette is stable in size , and note is made of a moderate hiatal hernia . Bilateral small pleural effusions are also present . Increased lung volumes are suggestive of COPD .
    OUTPUT:
    
1 . Improving pulmonary edema with residual interstitial edema remaining as well as small bilateral pleural effusions . 2 . Moderate hiatal hernia .