Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is not engorged . Subsegmental atelectasis is noted in the lung bases . Lungs are otherwise clear without focal consolidation . No pleural effusion or pneumothorax is present . Moderate degenerative changes are noted in the thoracic spine . Coils are seen within the midline upper abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .