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Definition of "pheochromocytoma" [pheochromocytoma]

  • 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "pheochromocytoma" in a sentence
  • "The doctor told my brother and me he had to remove the whole adrenal gland in addition to the tumor -- a pheochromocytoma, which is fairly rare."
  • "Other tests showed similar results, the researchers said, notably in 14 patients with pheochromocytoma, a rare tumor of the adrenal glands, and paraganglioma, another rare tumor."
  • "It is important to note that these symptoms are not definite signs of MTC, pheochromocytoma or hyperparathyroidism."