Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , a right lower lobe opacity is new and concerning for pneumonia . Elevation of the right hemidiaphragm is also new . Lung volumes are low , unchanged . The left lung is clear without effusion or consolidation .
    OUTPUT:
    
New right hemidiaphragm elevation and right lower lobe opacity , concerning for pneumonia .