This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Medicine
[{'content': 'Which of the following leads to development of SIADH? \nSelect and explain. \nA. Head trauma, B. Pituitary adenoma, C. Lithium, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes of SIADH = 1. CNS infection 2. Trauma 3. Meningitis 4. Encephalitis 5. Ectopic Ca tumor Option B: Pit Adenoma = Prolactinoma (increase prolactin), | GH Option C: Lithium = Causes Nephrogenic diabetic insipidus -Manifestation of SIADH- Dilutional Hypernatremia Treatment of SIADH = Vaptan tolvaptan', 'role': 'assistant'}]