Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube projects at midline . A left - sided PICC line terminates in the IVC , unchanged . Lung volumes are decreased . Bibasilar opacities have increased in size . There is no pneumothorax .
    OUTPUT:
    
Increased bibasilar opacities , could reflect a combination of pleural effusion and atelectasis . However , in the appropriate clinical setting an underlying infectious process can not be excluded .