Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Significant interval improvement in multifocal heterogeneous opacities with residual bibasilar atelectasis . No new focal opacity , pleural effusion , pneumothorax , or pulmonary edema . Heart size , mediastinal contour , and hila are otherwise normal . No bony abnormality .
    OUTPUT:
    
Significant interval improvement in multifocal opacities with residual mild bibasilar atelectasis . Results were conveyed via telephone to ___ by Dr . ___ on ___ at 2 :30 p .m . , within 10 minutes of observation of findings .