Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube has been pulled back with the tip now 4 cm from the carina . The tip of the nasogastric tube is in the body of the fundus in good position . Interval improvement of the mild interstitial edema . Persistent left retrocardiac opacity and effusion .
    OUTPUT:
    
The ET tube is now in good position . Improvement of the mild interstitial edema . Left retrocardiac opacity and small pleural effusion are stable .