If you have cancer of the stomach, doctors would go in with the instrument and remove that area of tissue. Another possible application is fixing reflux disease. A new area that doctors are pursuing is trans-gastric surgery, where you go into the mouth, enter the stomach, make an incision in the stomach wall and then into the abdominal cavity. Once you are in the abdominal cavity, you can remove someone's gall bladder, for example. Because you gain entry through the mouth, there is no scar.

William Peine