Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The frontal and lateral chest radiograph demonstrate increased opacification of the right lower lung concerning for pneumonia . The left lung is grossly clear . There is no pleural effusion or pneumothorax . The heart size is normal and hilar contour or unremarkable . Left pectorally placed pacer with intact leads terminating in the right atrium and ventricle is identified .
    OUTPUT:
    
Increased opacification of the right lower lung concerning for pneumonia . Since ___ , there has been progressive increased opacification of the right lower lung which deserves further evaluation with post treatment imaging in ___ weeks . Persistent opacification may warrant evaluation with chest CT to exclude malignancy and instead confirm suspicion of acute pneumonia .