Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the prior examination dated ___ , there has been no significant interval change . Redemonstrated are essentially unchanged , diffuse interstitial opacities , compatible with the patient 's interstitial lung disease . Additionally , a retrocardiac opacity is unchanged . There is no evidence of pneumothorax , pleural effusion , or frank pulmonary edema . A left IJ catheter is again seen terminating in the lower SVC . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Unchanged diffuse interstitial opacities and a stable retrocardiac opacity . No evidence of pleural effusion , pneumothorax , or frank pulmonary edema .