Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Heart size and cardiomediastinal contours are normal . The lung volumes are low . Small right middle lobe opacity silhouettes the right heart border . Left lung is clear . No pleural effusion or pneumothorax .
    OUTPUT:
    
Small right middle lobe opacity is worrisome for pneumonia .