<prompt> In a chronic smoker with mild haemoptysis. He also gave a history of hypeension and obesity. Lab data showed raised ACTH levels, which were not suppressed by dexamethasone. The cause for the Cushings syndrome ha the patient is -MEN IPituitary adenomaAdrenal coical adenomaEctopic ACTH secreting tumor  <response>: ectopic ACTH production is not suppressed by high dose of dexamethasone Harrison 17 pg 2256 