Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Over 24 hours , there has been interval improvement in hazy right lower lobe opacity , which likely reflects improvement in atelectasis . There is no focal consolidation , pleural effusion , or pneumothorax . The cardiac silhouette is normal in size , the mediastinal contours are normal .
    OUTPUT:
    
No pneumonia , or acute chest pathology .