Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is small bilateral pleural effusions , left larger than right . The opacification at the left lung base is possibly pneumonia in correct clinical setting . Compared to the prior radiograph from ___ , left lung base opacification and pleural effusion is increased . There is no pneumothorax . Cardiomediastinal and hilar silhouettes are normal size . Right - sided dialysis catheter terminates in the right atrium , unchanged in position .
    OUTPUT:
    
Mild left lower lobe opacification is increased compared to ___ . This may represent progressive pneumonia in correct clinical setting .