Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged with a left ventricular configuration . The aorta is mildly tortuous . The lung volumes are low . The lungs appear clear . There is no pleural effusion or pneumothorax . Mild degenerative changes are noted along the lower thoracic spine .
    OUTPUT:
    
No evidence of acute disease .