Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes result in bronchovascular crowding . Bibasilar opacities , left greater than right , have increased from ___ . Blunting of the right costophrenic sulcus is unchanged and may be due to pleural scarring or tiny effusion . There is probably a small left pleural effusion . The heart is enlarged . Mediastinal silhouette is stable . No pneumothorax .
    OUTPUT:
    
Bibasilar opacities may be atelectasis or infection . Probably small left pleural effusion .