Korean J Med.
2010 Sep;79(3):321-326.
A case of adrenocortical adenoma with primary hyperaldosteronism and subclinical Cushing's syndrome
- Affiliations
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- 1Department of Internal Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Bucheon, Korea. kimsungrae@catholic.ac.kr
Abstract
- Cases of combined primary hyperaldosteronism and subclinical Cushing's syndrome are extremely rare. We identified a left adrenocortical tumor in a 41-year-old woman by computed tomography (CT) during an evaluation for hypokalemia and hypertension. Hormonal assessment demonstrated normal aldosterone concentrations, low plasma renin activity, an increased aldosterone/renin ratio, and normal serum cortisol levels. Selective adrenal venous sampling for the determination of aldosterone concentrations showed an overfunctioning left adrenal gland. Dexamethasone (overnight 1mg, 2 mg, 8 mg) suppression tests showed insuppressible cortisol. We diagnosed the patient as having an aldosterone-producing adrenal adenoma associated with subclinical Cushing's syndrome.
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