Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ at 05 :05 , there may have been minimal improvement in the bibasilar left - greater - than - right opacities , but the overall appearance is similar . No new opacity and no gross effusion is identified . Upper zone redistribution , without other evidence of CHF , not significantly changed . Cardiomediastinal silhouette , with sternotomy wires , unchanged .
    OUTPUT:
    
Minimal interval improvement in bibasilar left - greater - than - right opacities .