The procedure in which an anastomosis is created between the upper portion of the stomach and the duodenum is an (stomach = gastr/o, duodenum = duodenum and anastomosis = surgical connection which = ostomy which is also the surgical creation)
Answer: Gastroduodenostomy
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.