Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior film , the cardiomediastinal silhouette is unchanged . CHF findings are slightly improved . Focal opacity at the right lung base may be very slightly improved . Left lower lobe collapse and / or consolidation and small left effusion are similar to the prior film . Right IJ indwelling central line , with tip at SVC / RA junction is unchanged .
    OUTPUT:
    
Slight interval improvement in CHF findings and in right greater left base consolidation compared with ___ .