<prompt> Pheochromocytoma does not arise from which of the following -Adrenal medullaAdrenal cortexExtra adrenal sitesSympathetic chain  <response>: PheochromocytomaPheochromocytoma is a neoplasm of chromaffin cells which usually arise from the adrenal medulla.About 10 of these tumors arise at extra-adrenal sites, where they are called paraganglioma:-Paravertebral paraganglia organs of zuckerkandl Have sympathetic connection.Carotid bodies chemodectomas. 