Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest were acquired . Aside from minimal bibasilar atelectasis , the lungs are clear . Heart size is within normal limits . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
No acute cardiac or pulmonary process . Normal heart size .