Surgery for upper gastrointestinal tract

Incidence of gastric cancer is mainly in East Asia, and minimally invasive surgery such as endoscopic mucosal dissection, laparoscopic surgery and robotic surgery for gastric cancer has been developed mainly in this area. On the other hand, from the viewpoint of minimally invasive surgery for stomach diseases, various surgical techniques including benign diseases are performed in the world. In recent years, new techniques based on new concepts such as metabolic surgery for morbid obesity and combined operations of endoscope and laparoscope for submucosal tumor are being developed.