Source:http://linkedlifedata.com/resource/umls/id/C0002804
MSH: A Y-shaped surgical anastomosis of any part of the digestive system which includes the small intestine as the eventual drainage site.,NCI: Gastric bypass procedure in which part of the stomach is closed off with staples, and part of the small intestine is bypassed. This procedure is performed in severely obese patients, for permanent weight loss.