Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of a consolidation , effusion , or pneumothorax . Cardiac and mediastinal silhouettes are normal with the heart at the upper limits of normal . No acute fractures are identified with evidence of old healed right posterior rib fractures . Mild degenerative changes noted throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .