Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a persistent opacity at the left lung base obscuring the hemidiaphragm , secondary to a combination of a large pleural effusion and atelectasis . The appearance at the left lung base is overall unchanged since radiograph performed one day prior . There is also a small right pleural effusion . Moderate interstitial edema has developed in the interim . Pulmonary nodules are better assessed on the chest CT performed one day prior . The cardiac silhouette is mildly enlarged . There is no pneumothorax . The included upper abdomen is unremarkable .
    OUTPUT:
    
1 . No significant interval change to the opacity at the left lung base due to a combination of large left pleural effusion and atelectasis . 2 . Small right pleural effusion , also unchanged . 3 . Moderate interstitial edema .