Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube , nasogastric tube , and right IJ catheter are all unchanged . Lungs are lower in volume than on the previous examination with dense retrocardiac atelectasis and left and possibly right small pleural effusions . Despite low lung volumes , vascular congestion and edema appear improved .
    OUTPUT:
    
Improved pulmonary edema with low lung volumes , retrocardiac atelectasis and left greater than right trace pleural effusions .