Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities may be due to atelectasis although an infectious process is not excluded , particularly on the right . No large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Bibasilar opacities may in part be due to atelectasis however infectious process is not excluded , particularly in the right lower lobe .