Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size and cardiomediastinal contour is unremarkable . There is increased opacification at the right hilus as compared to the prior examinations . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Increased opacification in the medial right lower lung could represent pneumonia in the appropriate clinical context .