Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged but unchanged . The aorta is unfolded . The mediastinal and hilar contours are otherwise unchanged , and pulmonary vasculature is not engorged . Apart from minimal atelectasis in the lung bases , lungs are clear without focal consolidation . No pleural effusion or pneumothorax is detected . Hypertrophic changes are demonstrated within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .