Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . The heart is at the upper limits of normal size with a left ventricular configuration . There is similar mild unfolding of the descending thoracic aorta . There is no pleural effusion or pneumothorax . There are persistent unchanged bibasilar opacities with low lung volumes that appear most consistent with chronic atelectasis or scarring . There is no definite acute increase in opacities . Moderate - sized anterior osteophytes are present along the thoracic spine .
    OUTPUT:
    
Stable appearance of the chest .