Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral lower lung opacities are more conspicuous than before and given the history , I would be concerning for an aspiration pneumonia . Lungs are relatively clear . Heart size , mediastinal and hilar contours are normal . There is no pleural effusion .
    OUTPUT:
    
Bilateral lower lung opacities are more conspicuous in comparison to prior radiographs from yesterday and in the view of clinical history , concerning for aspiration pneumonia .