Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal airspace opacity . Changes of mild pulmonary edema , decreased from prior . Small left pleural effusion . Cardiac silhouette is of normal size . This preliminary report was reviewed with Dr . ___ , ___ radiologist .
    OUTPUT:
    
Changes of mild pulmonary edema , improved from ___ . Small left pleural effusion .