This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'In Werner Syndrome, the most common site of Gastrinoma is? \nSelect and explain. \nA. Pancreas, B. Stomach, C. Small Intestine, D. Colon', 'role': 'user'}, {'content': 'Answer: C \nExplanation: "Gastrinomas are either associated with MEN I syndrome (30%) or sporadic (70%). Duodenal\xa0gastrinomas is the most frequent site for both the forms”\nMost gastrinomas (50-70%) are present in the duodenum, followed by the pancreas (20-40%) and other\xa0intraabdominal sites (mesentery, lymph nodes, biliary tract, liver, stomach, ovary). Three cases with two\xa0extra abdominal sites have been described: gastrinomas of the left ventricular septum of the heart and\xa0non-small cell lung cancer. In MEN-1, the gastrinomas are also usually in the duodenum (70-90%) or the\xa0pancreas (10-30%), and they are almost always multiple.', 'role': 'assistant'}]