Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ET tube is present , tip approximately 8 .9 cm above the carina on this lordotic film . Pacemaker type leads overlie the chest . There are low inspiratory volumes . The cardiomediastinal silhouette is prominent , but likely accentuated by technique and unchanged . Hazy density at the left lung base is consistent with a small to moderate left effusion , with underlying collapse and / or consolidation . Minimal patchy opacity again noted in the right cardiophrenic region . There is vascular plethora , though this is likely also accentuated by technique and appears slightly improved compared with the earlier study . No right effusion identified .
    OUTPUT:
    
Left pleural effusion with underlying collapse and / or consolidation , similar prior study . CHF findings appear slightly improved .