Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were provided . There is scarring at the lung apices , consistent with prior TB infection . There is a focal opacity in the right lower lobe concerning for infection . There is no pleural effusion or pneumothorax . The heart size is mildly enlarged and the aorta is calcified . The osseous structures are intact .
    OUTPUT:
    
1 . Focal opacity at the right lower lobe concerning for infection . 2 . Scarring at the lung apices , consistent with prior exposure to TB .