Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates 4 .3 cm from the carina . Nasogastric tube tip courses below the inferior aspect of the left hemidiaphragm , off the inferior borders of the film . Lung volumes are low . Heart size is mildly enlarged . Aortic knob is mildly calcified . Crowding of the bronchovascular structures is noted , with prominence of the hilar regions . No overt pulmonary edema is noted . Bibasilar airspace opacities are nonspecific , and could reflect atelectasis , aspiration or infection . Small bilateral pleural effusions are present . No pneumothorax . No acute osseous abnormalities are visualized .
    OUTPUT:
    
Low lung volumes . Bibasilar airspace opacities are nonspecific but may reflect atelectasis , infection or aspiration . Small bilateral pleural effusions . Standard positioning of the endotracheal tube and nasogastric tube .