Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 03 :36 is submitted .
    OUTPUT:
    
Endotracheal tube and right internal jugular central line are unchanged in position . Right basilar pleural pigtail catheter remains in place with a small residual effusion . There is improving aeration in both lungs with resolving interstitial and perihilar edema . Patchy opacity at the right base likely reflects atelectasis . Overall cardiac and mediastinal contours are stable . No obvious pneumothorax .