Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tip of the right internal jugular catheter terminates in the mid SVC . Endotracheal tube terminates 4 .3 cm above the carina . Enteric tube courses to at least the lower esophagus , but the tip is not captured on the current study . Lung volumes are low . Bibasilar opacities most likely represent atelectasis . However , superimposed infection should be considered in the appropriate clinical setting , particularly at the left lung base . No sizable pleural effusion or pneumothorax . Heart size is top - normal .
    OUTPUT:
    
1 . Low lung volumes with crowding of bronchovascular structures . 2 . Bibasilar opacities likely represent atelectasis , but superimposed infection or aspiration should be considered in the appropriate clinical setting .