Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate to large right pleural effusion , larger than on prior . Associated underlying atelectasis is seen . Blunting of the left lateral costophrenic angle could be due to overlying soft tissues although small underlying effusion is also possible . Superimposed pulmonary vascular congestion is suspected . Atherosclerotic calcifications noted at the aortic arch .
    OUTPUT:
    
Interval enlargement of the moderate to large right - sided pleural effusion . Pulmonary vascular congestion .