Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided prepectoral Port - A - Cath in situ with the tip in the right atrium . No pneumothorax . The heart size is normal . Large retrocardiac hiatal hernia . Mild elevation of the right hemidiaphragm with associated subsegmental atelectasis ( in keeping with post biliary intervention ) . No confluent airspace consolidation to suggest pneumonia . No pulmonary edema . Spondylotic changes of the thoracic spine .
    OUTPUT:
    
Mild elevation of the right hemidiaphragm with adjacent subsegmental atelectatic changes ( suspected to be secondary to the biliary procedure ) . No confluent airspace consolidation to suggest pneumonia . Please note that early aspiration / pneumonia ca n't be excluded with absolute certainty and short interval follow - up imaging may be performed . This preliminary report was reviewed with Dr . ___ , ___ radiologist .