Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A persistent left retrocardiac density is again seen , reflecting left lower lobe atelectasis or consolidation . No new consolidation , effusion , or pneumothorax is detected . An endotracheal tube and right IJ catheter are unchanged in position . An orogastric tube terminates within the stomach .
    OUTPUT:
    
1 . Persistent left lower lobe retrocardiac opacity . 2 . No new superimposed consolidation or effusion .