Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is moderately enlarged but unchanged . The aorta is tortuous . Mediastinal and hilar contours are similar . No pulmonary edema is seen . There is no focal consolidation , pleural effusion or pneumothorax identified . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .