Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 13 :33 is submitted .
    OUTPUT:
    
Endotracheal tube continues to have its tip approximately 3 cm above the carina . The nasogastric tube is seen coursing below the diaphragm with the tip not identified . A left internal jugular central line is unchanged in position . Overall cardiac and mediastinal contours are stable . There is persistent blunting of the left costophrenic angle and tenting of the right hemidiaphragm suggestive of volume loss in the right lung which is likely postoperative . There continues to be more focal patchy opacity at both bases , although this has somewhat improved since the prior study . Findings would be consistent with resolving pulmonary edema with an atypical distribution due to underlying emphysema , less likely improving pneumonia . Note that the 2 cm spiculated peripheral right lower lobe mass seen on recent chest CT ___ is not radiographically apparent .