Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Lungs are clear . Pulmonary vascularity is normal . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are present . Mild degenerative changes are seen in the thoracic spine . Cholecystectomy clips are present in the right upper quadrant of the the abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .