Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . Some patchy opacities are seen at the right base which were not present on the prior chest x-ray of 10 hours before . No effusions are identified . The upper zone vessels appear slightly more prominent , but gross failure is not present .
    OUTPUT:
    
Evidence of right lower lobe pneumonia . No overt failure .