Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear unchanged allowing for differences in technique and positioning . There is a focal opacity in the right lower lobe , obscuring the posterior right hemidiaphgram and better depicted on the laterl view . There is no pleural effusion or pneumothorax . The bony structures are unremarkable .
    OUTPUT:
    
Opacity in the right lower lobe , worrisome for pneumonia . Atelectasis or aspiration could also be considered . Short - term radiographic followup is suggested .