Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits . The right hemidiaphragm is mild to moderately elevated compared to the left , and there is an opacity in the right lower lobe , which could be seen with pneumonia in the appropriate clinical setting . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
Hazy posterior opacity , probably in the right lower lobe , concerning for pneumonia .