Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A VP shunt is seen coursing through the right hemithorax into the right abdomen . Tracheostomy tube is noted . Though this study is not intended for evaluation of the airway , the trachea does not appear much larger than the tracheostomy tube . A Dobbhoff feeding tube is seen coursing into the proximal duodenum . IVC filter projects over the right border of the L2 and L3 vertebral bodies . Large mass in the right upper lung causes rightward tracheal deviation but is better assessed on the prior chest CT . Marked elevation of the right hemidiaphragm is again noted , with resultant right basal atelectasis . There is no pleural effusion or pneumothorax . Mild cardiomegaly is noted .
    OUTPUT:
    
Right hemidiaphragmatic elevation with resultant atelectasis , perhaps a result of phrenic nerve paralysis secondary to the large right mediastinal mass .