Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from earlier today , interval decrease in left - sided effusion which is now minimal . Tiny left apical pneumothorax persists , appears smaller . Large hiatal hernia is again demonstrated . No other unfavorable change .
    OUTPUT:
    
Interval decrease in left - sided pleural effusion and apical pneumothorax .