Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , the cardiomediastinal silhouette is probably unchanged . There is upper zone redistribution , without overt CHF . Fractured inferior sternotomy wire again noted . The left hemidiaphragm and left costophrenic sulcus are now better defined , suggesting interval improvement in the the left effusion and left lower lobe collapse / consolidation . Some residual left lower lobe atelectasis persists . On the right , there has been slight improvement in the right cardiophrenic opacity . The small right effusion is again seen , similar to prior . Left - greater - than - right apical pleural thickening again noted . Fractures of the mid / lower posterior right ribs again noted , presumably old . No pneumothorax detected . NG tube , pacemaker , and presumed epidural catheter again noted .
    OUTPUT:
    
Partial interval improvement in collapse / consolidation at the left base and in the right cardiophrenic opacity . Marked improvement in left pleural effusion . NG tube extends beneath the diaphragm off the film . The sideport is not well delineated , but appears to lie immediately beyond the GE junction .