Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pigtail that was proven to be outside of the patient 's pleural space has been removed since previous exam . Pleural effusion has reaccumulated but the amount is minimal . New bilateral bibasilar opacities could represent atelectasis , however an aspiration or developing pneumonia can not be excluded in the appropriate clinical setting . There is no pneumothorax . Mediastinal and cardiac contours are normal . Left - sided PICC line ends at cavoatrial junction .
    OUTPUT:
    
1 . Small right - sided pleural effusion has slightly increased in volume after pigtail removal . 2 . New bibasilar opacities probably represent atelectasis . However , aspiration or pneumonia may have a similar radiographic appearance .