Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly unfolded . Pulmonary vascularity is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is present . Cervical spinal fusion hardware is partially imaged . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .