Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is not enlarged . Aorta is calcified and minimally unfolded . The mediastinal and hilar contours are otherwise within normal limits for age . No CHF , focal infiltrate or effusion is identified . No pneumothorax is detected . The right hemidiaphragm is slightly elevated .
    OUTPUT:
    
No evidence of pneumonia .