Pheochromocytoma

फीयोक्रोमोसाइटोमा अधिवृक्क ग्रंथि की मज्जा का एक neuroendocrine ट्यूमर है।

Pheochromocytoma (PCC) is a neuroendocrine tumor of the medulla of the adrenal glands (originating in 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, tumors that originate in the ganglia of the sympathetic nervous system and are named based upon the primary anatomical site of origin. The term is from Greek phaios "dark", chroma "color", kytos "cell", -oma "tumor".