Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Lungs are clear . Pulmonary vascularity is normal . No pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities . Postsurgical and degenerative changes of the right acromioclavicular joint are unchanged . No free air is seen under the diaphragms . Clips are seen in the right upper quadrant compatible prior cholecystectomy .
    OUTPUT:
    
No acute cardiopulmonary process . No free air is identified under the diaphragms .