Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is mild stable enlargement of the cardiac silhouette . There is stable right greater than left perihilar / basilar predominant opacities . Mild distention of the azygous vein would favor asymmetric edema . No large pleural effusion is seen . There is no evidence of a pneumothorax . The hilar and mediastinal contours are otherwise unremarkable .
    OUTPUT:
    
Stable right greater than left perihilar / basilar predominant opacities likely representing asymmetric pulmonary edema , although an underlying infectious etiology , in the appropriate clinical situation , can not be excluded .