PHEOCHROMOCYTOMA causes,pathophysiology,clinical features,dx and treatment HD

PHEOCHROMOCYTOMA is a catecholamine secreting tumor of the adrenal gland originating from the chromaffin cells), or extra-adrenal chromaffin tissue that failed to involute after birth that secretes high amounts of catecholamines, mostly norepinephrine, plus epinephrine to a lesser extent. Extra-adrenal paragangliomas (often described as extra-adrenal pheochromocytomas) are closely related, though less common,