Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung are volumes are low . The cardiac , mediastinal and hilar contours appear probably unchanged although cardiac borders are obscured by recurrent nearly confluent opacity involving the mid to left lower lung . A new opacity in the right upper lobe suggests pneumonia . Volume loss has actually improved somewhat in the right lower lung , probably encroaching on the right middle lobe . Small subpulmonic effusions are not excluded .
    OUTPUT:
    
Recurrent opacity in the left lower lung and new right upper lobe opacity concerning for pneumonia .