Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes seen on the current exam with secondary crowding of the bronchovascular markings and bibasilar opacities , likely atelectasis . Cardiac silhouette is mildly enlarged likely in part due to technique . No acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with probable bibasilar atelectasis .