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: Surgery
[{'content': 'Splenic vein thrombosis is best treated by ? \nSelect and explain. \nA. Splenectomy, B. Poo-caval shunt, C. Spleno-renal shunt, D. Mesenterico-caval shunt', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Splenectomy", 'role': 'assistant'}]