Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is bibasilar atelectasis . There is a large retrocardiac hiatal hernia again seen . No pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
No acute cardiopulmonary process . Hiatal hernia again seen .