Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiographs of the chest were acquired . There are bilateral lower lung heterogeneous opacities , right greater than left , concerning for infection versus aspiration pneumonitis . The mid and upper portions of both lungs are clear . The heart is normal in size . The mediastinal contours are normal . There are no definite pleural effusions , although the right costophrenic angle is excluded from both radiographs . There is no pneumothorax .
    OUTPUT:
    
Bilateral lower lung heterogeneous opacities , right greater than left , concerning for infection versus aspiration pneumonitis . Clinical correlation is recommended .