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Pheochromocytoma

Abstract

You are reading a NORD Rare Disease Report Abstract. NORD’s full collection of reports on over 1200 rare diseases is available to subscribers (click here for details). We are now also offering two full rare disease reports per day to visitors on our Web site.

NORD is very grateful to Patricia Dahia, MD, PhD, Assistant Professor, Department of Medicine and Cellular & Structural Biology, Cancer Therapy and Research Center, University of Texas Health Science Center, for assistance in the preparation of this report.

Synonyms of Pheochromocytoma

  • adrenal paraganglioma
  • chromaffin cell tumor
  • paraganglioma

Disorder Subdivisions

  • No subdivisions found.

General Discussion

Pheochromocytoma is a rare type of tumor that arises from certain cells known as chromaffin cells, which produce hormones necessary for the body to function properly. Most pheochromocytomas originate in one of the two adrenal glands located above the kidneys in the back of the upper abdomen. Most chromaffin cells are found in the adrenal gland's inner layer, which is known as the adrenal medulla. Approximately 90 percent of pheochromocytomas occur in the adrenal medulla. Approximately 10 percent occur outside of this area. These cases are referred to as extra-adrenal pheochromocytomas or paragangliomas. Paragangliomas may be found in the chest, heart, bladder, and/or neck or base of the skull. Symptoms associated with pheochromocytomas include high blood pressure (hypertension), headaches, excessive sweating, and/or heart palpitations. In most cases, pheochromocytomas occur randomly, for unknown reasons (sporadically). In approximately 25 to 35 percent of cases, pheochromocytomas may be inherited as an autosomal dominant trait. Some inherited cases may occur as part of a larger disorder such as multiple endocrine neoplasia types 2a and 2b, von Hippel-Lindau syndrome, neurofibromatosis or familial paraganglioma syndromes types 1, 3 or 4, or as familial isolated pheochromocytoma.

Pheochromocytoma Resources

Please note that some of these organizations may provide information concerning certain conditions potentially associated with this disorder.

NORD Member Organizations:

(To become a member of NORD, an organization must meet established criteria and be approved by the NORD Board of Directors. If you're interested in becoming a member, please contact Susan Olivo, Membership Manager, at solivo@rarediseases.org.)

Other Organizations:

The information in NORD’s Rare Disease Database is for educational purposes only. It should never be used for diagnostic or treatment purposes. If you have questions regarding a medical condition, always seek the advice of your physician or other qualified health professional. NORD’s reports provide a brief overview of rare diseases. For more specific information, we encourage you to contact your personal physician or the agencies listed as “Resources” on this report.

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