Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal in size and demonstrates left ventricular configuration . Tortuosity of thoracic aorta is unchanged . Focal linear areas of scarring at the lung bases appear unchanged . No new areas of lung opacity are identified . Bones are diffusely demineralized , and compression deformities are again demonstrated in the thoracic spine .
    OUTPUT:
    
No evidence of pneumonia .