Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . Lung volumes are low on the frontal projection . Though allowing for this , the lungs are clear without focal consolidation , effusion , pneumothorax . Heart and mediastinal contours are normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
No signs of pneumonia .