Operative endoscopy of the upper gastrointestinal tract.
D004947:Esophagus / Q000601:surgery*; D005336:Fiber Optic Technology; D005547:Foreign Bodies; D005773:Gastroscopy; D006801:Humans; D011127:Polyps / Q000601:surgery*; D013270:Stomach / Q000601:surgery*; D013537:Sutures