Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As also noted on chest radiograph from 2 hours prior , there are low lung volumes with increased bibasilar atelectatic changes , difficult to discern whether bibasilar opacities are solely atelectatic or whether there is underlying in pneumonia . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable and unremarkable .
    OUTPUT:
    
As also noted on chest radiograph from 2 hours prior , there are low lung volumes with increased bibasilar atelectatic changes , difficult to discern whether bibasilar opacities are solely atelectatic or whether there is underlying in pneumonia . No significant interval change from 2 hours prior .