Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes limits assessment of the lung bases . Patchy and linear bibasilar opacities most likely represent atelectasis . . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
The bibasilar atelectasis , right greater than left . No definite pneumonia . Repeat radiograph with improved inspiratory level would be helpful for more complete assessment of the lung bases when the patient 's condition permits .