Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is complete opacification of the right hemi thorax compatible with a large right effusion . There has been some mediastinal shift to the left the visualized portions of the left lung are predominantly clear with some volume loss / early infiltrate at the base compared to the prior the effusion is larger on the right . There is no pneumothorax
    OUTPUT:
    
Increased right effusion in patient with known stage IV lung cancer , hilar and mediastinal lymphadenopathy on the right