Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No pneumothorax or pulmonary edema is present . There is chronic elevation of the left hemidiaphragm and possible left pleural effusion which appear unchanged from the prior examination . The heart size is normal . There is tortuosity of the aorta .
    OUTPUT:
    
No acute cardiopulmonary process . Stable elevation and eventration of the left hemidiaphragm . Possible small left pleural effusion similar to prior examination .