Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low with adjacent bibasilar compressive atelectasis . The heart size is difficult to evaluate due to low lung volumes . Mediastinal silhouette and hilar contours are unremarkable . Lungs are otherwise clear . There is no pleural effusion or pneumothorax . The osseous structures are grossly unremarkable .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . No focal consolidation worrisome for pneumonia . No interstitial edema .