Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . There is no evidence for pleural effusion or pneumothorax . There is vague asymmetric opacity in the right lower lung which is faint but new and potentially represents an early focus of pneumonia . The osseous structures are unremarkable .
    OUTPUT:
    
Vague right lower lung opacity , potentially an early developing pneumonia .