Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is increase in bilateral perihilar patchy opacities , which could be due to pulmonary edema ; however , in the appropriate clinical setting , multifocal infection could be present . No large pleural effusion is seen , but trace pleural effusions are difficult to exclude . There is no pneumothorax . The cardiac silhouette is top normal . Mediastinal contours are unremarkable .
    OUTPUT:
    
Increase in patchy perihilar opacities could be due to worsening pulmonary edema versus multifocal infection depending on the clinical scenario .