Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours are unremarkable . The lungs appear clear . Lung volumes are low . Streaky opacities in the lower lungs suggest minimal atelectasis . There are no definite findings suspicious for pneumonia . No pleural effusion or pneumothorax is seen . Compression deformities along the lower thoracic spine appear unchanged . T12 and L2 have been treated with vertebroplasty and kyphoplasty , respectively .
    OUTPUT:
    
No evidence of acute disease .