Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Improved aeration of the right lung compared to the prior exam with persistent moderate - to - large pleural effusion . Left lung is decreased in volume with crowding of bronchovascular markings but no focal consolidation or pleural effusion . Pigtail catheter projects over the right hemithorax . Right PICC tip terminates in the upper SVC . Enteric tube traverses below the diaphragm into the stomach and out of view .
    OUTPUT:
    
Improved aeration of the right lung with decreased but persistent moderate - large right pleural effusion .