This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cushing Syndrome, Subject name: Medicine
[{'content': 'Obesity is seen in all except? \nSelect and explain. \nA. Cushing syndrome, B. Pickwickian syndrome, C. Prader Willi syndrome, D. Sipple syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sipple syndrome/ MEN 2A charecterized by : Pheochromocytoma Medullary Carcinoma Of Thyroid Hyperparathyroidism It has a pheochromocytoma which is associated with weight loss due to sympathomimetic activity secondary to increased catecholamines.', 'role': 'assistant'}]