Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large elevated left hilus and chronic interstitial changes are consistent with sarcoid as seen on prior CT . Interstitial changes have been worse in the left lung chronically . There is no pleural effusion or pneumothorax . Cardiac silhouette is normal size .
    OUTPUT:
    
No pulmonary edema . Chronic interstitial changes are stable compared to ___ .