Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to most recent prior exam , there has been no detected interval change . Bibasilar opacities , left greater than right , are seen . There is likely a small left pleural effusion . No pneumothorax is detected . Heart size is difficult to evaluate in the setting of bibasilar opacities , but appears top normal to mildly enlarged . There is no mediastinal widening . No pulmonary vascular congestion or interstitial edema is detected .
    OUTPUT:
    
Bibasilar opacities , left greater than right , for which differential diagnosis includes infection , aspiration , and atelectasis . Small left pleural effusion . Discussed with ___ by ___ by phone at 2 :31 a .m . on ___ .