Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . There is no pleural effusion or pneumothorax . The lungs are well - expanded and clear . There is chronic eventration of the right hemidiaphragm .
    OUTPUT:
    
No acute abnormalities are identified to explain patient 's left anterior chest pain .