Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip is in standard position , terminating approximately 4 cm from the carina . No pneumothorax is detected . Again demonstrated is mild pulmonary edema with moderate layering bilateral pleural effusions . Bibasilar airspace opacities likely reflect compressive atelectasis but infection can not be excluded . The cardiac , mediastinal and hilar contours are unchanged .
    OUTPUT:
    
Standard positioning of the endotracheal tube .