Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 13 22 is submitted .
    OUTPUT:
    
Endotracheal tube , right internal jugular central line , right subclavian PICC line , and feeding tube are unchanged in position . The more nodular patchy opacities in the right costophrenic angle and at the left lung base have somewhat improved . However , there is persistent consolidation in the retrocardiac region which may represent an area of pneumonia or lower lobe atelectasis in the setting of a layering pleural effusion . Clinical correlation is advised . The pulmonary vasculature is somewhat ill - defined and this likely reflects superimposed mild edema . No pneumothorax . The patient is status post median sternotomy with expected postoperative changes in the left hemithorax .