Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph performed ___ , multifocal nodular opacities have substantially improved . No new consolidation . No pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal . No acute osseous abnormalities .
    OUTPUT:
    
Substantial improvement in multifocal opacities over the past 3 days , which may represent resolving infection or aspiration .