Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube ends at 4 cm from carina bifurcation and it has been pulled back 3 cm . NG tube ends in distal gastric cavity . Lung is moderately inflated with persistent left lung base opacification , due to atelectasis and pleural effusion . There is no pneumothorax . Heart size is still moderately enlarged .
    OUTPUT:
    
The ET tube has been pulled back 3 cm , now in correct position . The exam is otherwise unchanged .