Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Lower lung volumes seen on the current exam . Bibasilar opacities are likely due to secondary atelectasis . There is no effusion . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Surgical clips in the right upper quadrant suggest prior cholecystectomy .
    OUTPUT:
    
Bibasilar opacities suggestive of atelectasis given low lung volumes . Otherwise , unremarkable chest x-ray .