Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Analysis is performed in direct comparison with the next preceding similar study obtained four hours earlier during the same day . Again noted is a hypoventilated appearance of both lungs related to poor inspiration . The left basal linear density is again identified and represents an atelectasis . There is no evidence of new acute pulmonary infiltrates and the lateral pleural sinuses remain free . No pneumothorax has developed . The ETT remains in unchanged appropriate position . The NG tube reaches well below the diaphragm including the side port and there is no further evidence of tube coiling in the hypopharynx .
    OUTPUT:
    
No new pulmonary abnormalities . ETT in appropriate position .