Bilio-pancreatic diversion with duodenal switch (also called Duodenal switch), is a complex bariatric surgery where the stomach is “sleeved” and a significant portion of the intestines are bypassed. It’s not a popular or routinely  preformed procedure when compared to a sleeve gastrectomy or gastric bypass but produces a significant amount of weight loss.  In this video, a viewer asks Dr. Matthew Weiner, to provide more information on the duodenal switch surgery.