Roux-en-Y Anastomosis

The Roux-en-Y anastomosis is a surgical technique in general surgery used to reconstruct the gastrointestinal tract, typically by connecting the stomach to a segment of small bowel located further down the digestive system. It is named after the surgeon Cesar Roux, who first described it, and its name reflects the Y shape it forms when diagrammed. The procedure serves multiple purposes, including obesity management through gastric bypass, reconstruction after stomach cancer surgery, treatment of bile duct obstructions, and pancreatic transplantation, and the altered anatomy it creates can lead to indigestion and, in up to 45 percent of patients, iron deficiency anemia.