Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in aeration of the lungs and pulmonary edema . Left lower lung and retrocardiac opacity has since improved , likely representing atelectasis . Slight increased opacity in the right lower lobe may reflect atelectasis or consolidation . Moderate cardiomegaly persists . No pleural effusion or overt pulmonary edema . No change in the position of the ETT , median sternal the wires , or right IJ catheter sheath .
    OUTPUT:
    
1 . Improved aeration and resolved pulmonary edema since ___ . 2 . Right lower lobe atelectasis or aspiration .