Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 05 :54 is submitted .
    OUTPUT:
    
Right subclavian central line now all has its tip in the distal SVC . Endotracheal tube , left PICC line and nasogastric tube are unchanged in position . Improved aeration at both lung bases , right greater than left consistent with resolving atelectasis . No pulmonary edema or pleural effusions . No pneumothorax . Overall cardiac and mediastinal contours are stable .