Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from earlier today , support devices remain in standard position . Substantial opacification of the left lower lobe has progressed can be worsening atelectasis or consolidation . Improved aeration of the right lower lobe . Pulmonary vascular congestion persists . No pneumothorax
    OUTPUT:
    
Substantial opacification of the left lower lobe may reflect collapse or new consolidation with increasing effusion .