Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: All lines and tubes are in appropriate positioning in unchanged compared to prior . There are increasing opacities within the lower lobes bilaterally , which is concerning for aspiration pneumonia . The pulmonary vasculature is normal . The heart is not enlarged . There are no pleural effusions poor there is no pneumothorax .
    OUTPUT:
    
1 . Appropriate positioning of all lines and tubes . 2 . Increasing opacities within the lower lobes bilaterally , concerning for aspiration pneumonia .