Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with bibasilar volume loss and obscuration of the right hemidiaphragm laterally , likely representing a small infiltrate in this region . This has progressed since the prior film from four days ago . The upper lungs are clear . There is minimal pulmonary vascular re-distribution .
    OUTPUT:
    
Increased right lower lobe infiltrate .