Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior examination , there is more consluent consolidation at the right lung base concerning for pneumonia . The right hemidiaphragm is chronically elevated . An underlying small right pleural effusion can not be excluded . There is no pneumothorax . The heart is mildly enlarged , unchanged in size .
    OUTPUT:
    
Right basilar pneumonia . with possible associated small effusion .