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(non-FUNK-shuh-ning TOO-mer) A tumor that is found in endocrine tissue but that does not make extra hormones (chemicals that travel in the blood and control the actions of other cells or organs).
- Browse Related Terms: adrenal medulla, catecholamine, chromaffin cell, endocrine, functioning tumor, hormone, hypothalamus, involuntary, nonfunctioning tumor, noradrenaline, norepinephrine, paraganglia, paraganglioma