Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low inspiratory volumes . The cardiomediastinal silhouette , with sternotomy wires noted , is prominent , but probably unchanged . There is upper zone redistribution , diffuse vascular blurring , with interstitial edema , consistent with CHF . This could be very slightly improved . However , there is new right base opacity and new obscuration of the right hemidiaphragm . Although not fully characterized , the appearance is compatible with a small effusion underlying collapse and / or consolidation . Small left effusion is again noted .
    OUTPUT:
    
CHF with interstitial edema , equivocally slightly improved compared with ___ . Note is made , however , the inspiratory volumes are slightly lower . New opacity at the right base , not fully characterized , but likely combination of a small effusion and underlying collapse and / or consolidation . Small left pleural effusion is unchanged .