Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette remains stably enlarged with minimal increase in right greater than left perihilar / basilar predominant opacities . Distention of the azygos vein suggests volume overload favoring asymmetric edema . No large pleural effusion is evident . There is no pneumothorax .
    OUTPUT:
    
Minimal interval increase of right greater than left perihilar / basilar predominant opacities likely representing asymmetric pulmonary edema although underlying infectious etiology given the appropriate clinical situation can not be excluded .