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[fee-oh-kroh-moh-sahy-toh-muh] /ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə/

noun, plural pheochromocytomas, pheochromocytomata
[fee-oh-kroh-moh-sahy-toh-muh-tuh] /ˌfi oʊˌkroʊ moʊ saɪˈtoʊ mə tə/ (Show IPA). Pathology.
a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.

pheochromocytoma phe·o·chro·mo·cy·to·ma (fē’ō-krō’mō-sī-tō’mə)
n. pl. phe·o·chro·mo·cy·to·mas or phe·o·chro·mo·cy·to·ma·ta (-mə-tə)
A usually benign tumor of the adrenal medulla or the sympathetic nervous system in which the affected cells secrete increased amounts of epinephrine or norepinephrine.


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