This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Surgery
Treatment of choice for annular pancreas is 
Select and explain. 
A. Duodenoduodenostomy, B. Gastrojejunostomy, C. Vagotomy, D. Billroth type II gastrectomy
A: Duodenoduodenostomy
Answer: A: Duodenoduodenostomy 
Explanation: Ans. is 'a' i.e., Duodenoduodenostomy "The usual treatment is bypass (duodenoduodenostomy)" -- Bailey and Love"Retrocolicduodenojejunostomy is the procedure of choice." -- Harrison"Treatment usually involves bypass, through duodenojejunostomy, rather than resection." -- Sabiston"The surgical treatment of choice for duodenal obstruction due to duodenal stenosis or atresia or annularpancreas is a duodenoduodenostomy." -- Schwartz 9/e