Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Lung volumes are low , though the lungs remain clear . The heart size is normal . Dual - lead pacer is unchanged . No pneumothorax or pleural effusion is seen . On the lateral view , a metallic stent is visualized in the right upper abdomen .
    OUTPUT:
    
No signs of pneumonia . Low lung volumes limit evaluation .