Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change compared to the prior radiograph performed 1 hr earlier . Lung volumes remain low . Bibasilar opacities are again noted . No pleural effusion or pneumothorax . No evidence of pulmonary edema . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities are identified .
    OUTPUT:
    
No significant interval change in left greater than right bibasilar opacities that may represent atelectasis or infection .