<prompt> Obesity is seen in all except?Cushing syndromePickwickian syndromePrader Willi syndromeSipple syndrome  <response>: 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. 