Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube remains in place . There is new right - sided volume loss with apparent elevation of the right hemidiaphragm , which is likely secondary to lower lobe atelectasis . Superimposed bibasilar opacities are unchanged . There is no pneumothorax . The heart and mediastinum are within normal limits .
    OUTPUT:
    
Right lower lobe opacity is likely due to atelectasis . Superimposed aspiration or infection can not be excluded an short - term followup radiographs may be helpful in this regard .