Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi supine chest radiograph ___ at 09 :22 is submitted .
    OUTPUT:
    
The endotracheal tube now has its tip 6 cm above the carina . There is improving aeration at both lung bases suggestive of resolving partial lower lobe atelectasis . There continues to be a layering left effusion . There has been interval appearance of mild pulmonary edema . Overall cardiac and mediastinal contours are stable .