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
[{'content': 'All of the following are true about gastrinoma except: \nSelect and explain. \nA. Mostly found in triangle of Passaro, B. Basal acid output >15 mEq/hour is diagnostic, C. Most common site is pancreas, D. Lymphadenectomy is not required as there is no improvement in survival', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gastrinoma OR Zollinger-Ellison syndrome (ZES) Increased gastrin, increased acid, increased risk of peptic ulcer disease. Triangle of Passaro/ Gastrinoma Triangle. M.C site of gastrinoma is duodenum (1st, 2nd& 3rd)> pancreas Gastrinoma is associated with MEN-1 syndrome. Diagnosis Basal acid output > 15 mEq / hour Best provocative test - Secretin Stimulation Test (gastrin release > 200Pg/ ml) IOC for localization - Somatostatin Receptor Scintigraphy Drug of choice - PPI Treatment of choice: pylorus preserving pancreatoduodenectomy', 'role': 'assistant'}]