Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been no significant interval change to the bibasilar opacities since prior study , although overall improved since the initial presentation on ___ , particularly at the right lung base . There is mild interstitial edema . The cardiomediastinal silhouette is stable . There is no pleural effusion or pneumothorax . A left upper extremity PICC terminates at the superior cavoatrial junction . Visualized upper abdomen is unremarkable .
    OUTPUT:
    
No significant interval change in the bibasilar opacities and mild interstitial edema since study one day prior .