Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left hilus has a bulbous contour , but this is unchanged from previous studies and is unlikely of clinical significance . Chronic elevation the left hemidiaphragm that is unchanged from prior studies . The cardiomediastinal silhouette is normal . The hilum and pleura are normal . The lungs are clear .
    OUTPUT:
    
Chronic elevated left hemidiaphragm . No acute cardiopulmonary disease .