Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is a new focal opacity , substantial in size , along the right lower lung , probably at least in part involving the right middle lobe , although the main part may be centered in either the right middle or lower lobe . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings consistent with pneumonia in the right lower lobe , new since the recent prior examination .