Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large left pleural effusion as well as subtly increased opacity throughout the right lung consistent with mild pulmonary edema . The cardiac silhouette is mildly displaced to the right however this finding may also reflect mild cardiac enlargement , possibly from a pericardial effusion . No pneumothorax . No right pleural effusion .
    OUTPUT:
    
1 . Large left pleural effusion 2 . Mild pulmonary edema seen primarily in the right lung . 3 . The heart appears minimally increased in size from the prior examination which may reflect a small pericardial effusion or rightward displacement from the large left pleural effusion .