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': 'Most common paraneoplastic syndrome associated with small cell lung cancer? \nSelect and explain. \nA. SIADH, B. Cushing, C. Hypercalcemia, D. Polycythemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common paraneoplastic syndrome associated with small cell lung cancer => SIADH > Cushing syndrome.', 'role': 'assistant'}]