Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with chest radiograph performed earlier on same day , there is a new opacity at the right lung base . Heart size is with in normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
New opacity at the right lung base , which may reflect early / developing pneumonia or localized hemorrhage . Please see separately dictated CT of the chest for more complete assessment . .