Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is in the right main bronchus , with resultant severe left lower lobe atelectasis which does not allow assessment of the cardiac contour . No pleural effusion or pneumothorax is identified . An NG tube ends in the stomach .
    OUTPUT:
    
Endotracheal tube in the right main bronchus with resulting severe atelectasis of the left lower lobe . Tube withdrawal of at least 4 cm is recommended .