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Endocrine glands
Endocrine glands


Adrenal metastases, CT scan
Adrenal metastases, CT scan


Adrenal Tumor - CT
Adrenal Tumor - CT


Definition:

Cushing syndrome due to adrenal tumor is an endocrine system disorder that occurs when there is a tumor of the adrenal gland releasing excess amounts of the hormone cortisol.



Alternative Names:

Adrenal tumor - Cushing syndrome



Causes, incidence, and risk factors:

Cushing syndrome is caused by constant, high levels of the steroid hormone cortisol. A tumor on one of the adrenal glands causes about 15% of all cases of Cushing syndrome. Adrenal tumors release cortisol.

Adrenal tumors may be noncancerous (benign) or cancerous (malignant).

Noncancerous tumors that may cause Cushing syndrome include:

  • Adrenal adenomas
  • Micronodular hyperplasia

Cancerous tumors that may cause Cushing syndrome include:

Adrenal tumors are rare. They may develop in anyone at any age, but are much more common in adults. They are found in women more often than men.

See also:



Symptoms:

Patients with a cancerous adrenal tumor may also have symptoms of higher than normal male hormone (androgen) levels, including:



Signs and tests:

Tests to confirm Cushing syndrome:

Tests to determine cause:

Other findings may include:



Treatment:

Cushing syndrome due to an adrenal tumor is treated with surgery to remove the tumor and often the entire adrenal gland.

Glucocorticoid replacement treatment is usually needed until the other adrenal gland recovers from surgery. You may need this treatment for 9 - 12 months.

If surgery is not possible (such as in cases of adrenal cancer), medicines can be used to stop the release of cortisol. These include:

  • Aminoglutethimide
  • Ketoconazole
  • Mifepristone
  • Mitotane

Radiation therapy usually does not work for cancerous adrenal tumors and is not appropriate for noncancerous tumors.



Support Groups:



Expectations (prognosis):

Patients with an adrenal tumor who have surgery have an excellent outlook. Surgery success rates are very high with this type of tumor.

For adrenal cancer, surgery is sometimes not possible. When surgery is performed, it does not always cure the cancer.



Complications:

Cancerous adrenal tumors can spread to the liver or lungs.



Calling your health care provider:

Call your health care provider if you develop any symptoms of Cushing syndrome.



Prevention:

Appropriate treatment of adrenal tumors may reduce the risk of complications in some patients with tumor-related Cushing syndrome.



References:

Stewart PM. The adrenal cortex. In: Kronenberg HM, Melmed S, Polonsky KS, Larsen PR. Williams Textbook of Endocrinology. 11th ed. Philadelphia, PA: Elsevier; 2008:chap 14.




Review Date: 3/18/2008
Reviewed By: Elizabeth H. Holt, MD, PhD, Assistant Professor of Medicine, Section of Endocrinology and Metabolism, Yale University. Review provided by VeriMed Healthcare Network. Also reviewed byDavid Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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