Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest provided . Left pacemaker and lead are in stable position . Lung base opacity best seen on the lateral view is concerning for pneumonia . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are normal .
    OUTPUT:
    
Lung base opacity best seen on the lateral view is concerning for pneumonia .