Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size with a left ventricular configuration . The aorta is mildly tortuous with calcifications seen along the arch . There is no widening of the mediastinum . The lungs appear clear . There is no pleural effusion or pneumothorax . Mild degenerative changes are noted along the thoracic spine . Slight biconcave configuration is noted among the lower thoracic vertebral bodies , coinciding with suspected demineralization .
    OUTPUT:
    
No evidence of acute disease .