Weight loss surgery for morbid obesity is complex as a first procedure. Revision surgery becomes even more complex because of scar tissue and the alteration of normal anatomy from the original procedure. All obesity surgery procedures CAN be revised. Not all SHOULD be revised. The key to revision surgery is being as certain as possible that the goals are clear and that the benefits outweigh the risks. To do this we need to gain as much information as possible related to the initial weight loss surgery procedure so that it can be evaluated for the reasons for failure. There can be many reasons for failure. Some reasons are mechanical and surgical. Some are not. It is important to differentiate which is the case prior to proceeding because statistically, revision surgeries have a higher risk of complications than original procedures. The weight loss associated with all revision surgeries varies from the losses seen from the original procedures.