Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is slightly increased opacity on the lateral film in the lower lobe compared to prior study , likely retrocardiac , which may represent pneumonia . There is no pleural effusion , or pneumothorax . The cardiomediastinal and hilar contours are normal .
    OUTPUT:
    
Slightly opacity on the lateral film in the lower lobe compared to prior study , likely retrocardiac , which may represent LLL pneumonia . These findings were discussed with Dr . ___ by Dr . ___ at 1015 am on ___ by phone .