Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been an interval increase in the moderate to severe parenchymal opacities , predominately at the lung bases bilaterally , and bilateral perihilar region . There has been interval progression of small bilateral pleural effusions . Widening of the upper mediastinum , at the region of the thoracic inlet , is unchanged compared to the prior exam given differences in acquisition technique . Note is made of bibasilar atelectasis . There is no pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Worsening moderate to severe pulmonary edema , and moderate bilateral pleural effusions . 2 . Left lower lobe atelectasis . A superimposed infectious process can not be excluded .