Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large right paramediastinal mass abutting the hilum as seen on prior . There is also a pleural - based mass projecting over the right mid to lower lung also seen on prior . New from prior is hazy left mid lung and retrocardiac opacity . Left chest wall pacing device is again noted .
    OUTPUT:
    
Known right hilar and right pleural based mass as on prior . Hazy left mid lung and retrocardiac opacity could represent a layering effusion or potentially atelectasis / consolidation . Consider PA and lateral to further assess .