Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent blunting of the right lateral and posterior costophrenic angle suggests persistent small effusion , decreased since prior . There may also be trace left pleural effusion . There is no focal consolidation or overt pulmonary edema . Cardiac silhouette is enlarged , similar configuration compared to prior which on remote exam had represented a pericardial effusion .
    OUTPUT:
    
Interval decrease in size of right pleural effusion which is now small . Possible trace left pleural effusion . Enlarged cardiac silhouette similar to prior which had previously been secondary to a pericardial effusion .