Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ET tube ends 4 .1 cm above the carina . An NG tube is present with the tip in the stomach but the side hole in the lower esophagus . Normal heart size , mediastinal and hilar contours . Retrocardiac opacity may reflect atelectasis , aspiration or infection . The right lung is clear . No pleural effusion or pneumothorax .
    OUTPUT:
    
1 . ET tube in satisfactory position . NG tube with the tip in the stomach but the side hole in the lower esophagus . 2 . Retrocardiac opacity may reflect atelectasis , aspiration or pneumonia .