Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph lung volumes are low . There are prominent interstitial markings likely representing mild pulmonary edema . Again seen is a opacity in the right lower lobe concerning for infection . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
1 . Interval development of mild pulmonary edema . 2 . Right lower lobe opacity , likely infection .