Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Large , calcific opacity in the right lower lung involving the pleura and parenchyma may reflect remote infection , possibly tuberculosis , or prior hemothorax . Superimposed pneumonia can not be excluded . Heart size is at the upper limits of normal and thoracic aorta is enlarged .
    OUTPUT:
    
Calcific opacity in the right lower lung may reflect remote infection or hemothorax . Recommend CT chest to evaluate for superimposed , acute pneumonia .