This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Post operative pancreatitis is seen in which type of surgery 
Select and explain. 
A. Billroth type I, B. Splenectomy, C. Nephrectomy, D. Roux-en-Y hepaticojejunostomy
B: Splenectomy
Answer: B: Splenectomy 
Explanation: Iatrogenic pancreatitis Acute pancreatitis can be associated with a number of surgical procedures, most commonly those performed on or close to the pancreas, such as pancreatic biopsy, biliary duct exploration, distal gastrectomy and splenectomy Acute pancreatitis is associated postoperatively with Billroth II gastrectomy and jejunostomy, in which increased intraduodenal pressure can cause backflow of activated enzymes into the pancreas Pancreatitis also can occur in association with surgery that uses low systemic perfusion, such as cardiopulmonary bypass and Cardiac transplantation Ref: schwaz's principle of surgery 10th edition Pgno :1352