<prompt> Pheochromocytoma produces all except?Nor-epinephrineSecretinVaso-active intestinal polypeptideCalcitonin  <response>: Pheochromocytoma secrets Norepinephrine VIP- Secretory diarrhea in pheochromocytoma is due to VIP, VIP opens water channels which result in development of secretory Diarrhea Calcitonin- Pheochromocytoma associated with MEN 2a syndrome MEN 2a - Medullary carcinoma of the thyroidcalcitonin, pheochromocytoma, parathyroid hyperplasia 