Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are moderate . Bilateral lower lobe patchy opacities are new in the interval and may reflect either developing infection or aspiration in the correct clinical setting . The cardiomediastinal silhouette is unchanged . There is no pleural effusion or pneumothorax . Pulmonary vasculature is normal .
    OUTPUT:
    
Bilateral lower lobe opacities may reflect developing infection or aspiration in the correct clinical setting .