Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild elevation of the left hemidiaphragm , which is stable since ___ . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . No acute cardiopulmonary abnormality . 2 . Chronic mild elevation of the left hemidiaphragm .