Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta is mildly tortuous . Mediastinal and hilar contours are within normal limits . Lungs are hyperinflated but clear without focal consolidation . Minimal scarring is noted at the lung apices . No pleural effusion or pneumothorax is present . Pulmonary vasculature is normal . There are minimal degenerative changes in the lower thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .