Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . There has been interval increase in right - sided pleural effusion with overlying atelectasis . Left base pleural calcification and atelectasis / scarring is without significant interval change . Multiple prior right - sided rib fractures are again seen . The cardiac silhouette is not optimally assessed given the right - sided pleural effusion , although grossly the cardiac and mediastinal silhouettes are stable . Enlargement of the main pulmonary artery is again seen .
    OUTPUT:
    
Interval increase in moderate - to - large right pleural effusion with overlying atelectasis .