Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is at the upper limits of normal size . Mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . A small eventration of the anterior right hemidiaphragm is again present . The lungs appear clear . There has been no significant change .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .