Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded , clear and pleural surfaces are normal . Heart size , mediastinal contour , and hila are normal . Mildly tortuous aorta is noted . Mild degenerative change of the thoracic spine is unchanged from prior .
    OUTPUT:
    
No radiographic evidence of pneumonia . The results were conveyed via telephone by Dr . ___ on ___ at 3 p .m . within 10 minutes of observation of findings to Dr .___ .