There are many methods used in the treatment of obesity. Each of these methods has success and failure rates. If a method fails or a patient who has lost weight regains weight years later, a method change may be required. In addition, in case of a problem due to a surgical method applied, method changes can be made. The surgeries performed in these cases are called revisional surgery. In the first years of obesity treatment, the band is removed and tube stomach is usually applied in the problems caused by the adjustable gastric balloon procedure, which is used intensively. In addition, gastric reduction or gastric bypass procedures can be performed in patients who regain weight after sleeve gastrectomy surgery. Various revisions can also be applied for complications after gastric bypass.