<prompt> Pheochromocytomas are known to arise from all of the following, except:Adrenal glandMediastinumNeckChest wall  <response>: Answer is D Chest wall: Pheochromocytomas are not found in the chest wall Pheochromocytomas may be found in the adrenal gland, neck and mediastinum along the sympathetic chain, abdomen paraaoic and urinary bladder. Sites of pheochromocytoma Adrenal gland most common Head and Neck Thorax mediastinum Intra abdominal paraaoic Bladder 