Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post intubation the ET tube is 4 .9 cm above the carina , slightly below the level of the clavicles . There are low lung volumes . There is no definite evidence of pneumothorax or pleural effusion . There are bilateral lower lobe opacities , which may be atelectasis or aspiration , however infection can not be excluded .
    OUTPUT:
    
1 . ET tube terminating 4 .9 cm above the carina . 2 . Bilateral lower lobe patchy opacity may represent atelectasis or aspiration , however infection can not be excluded .