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What is an aldosteronoma?

An aldosterone-producing tumor or aldosteronoma is a benign tumor in one of the adrenal glands that makes too much aldosterone. In bilateral hyperplasia, both adrenal glands are hyperactive and make too much aldosterone. Less common causes of primary hyperaldosteronism include unilateral adrenal hyperplasia (where one of the adrenal glands is hyperactive but there is no clear tumor), malignant aldosterone-producing tumor (a rare type of adrenocortical cancer that makes too much aldosterone), and genetic syndromes such as familial hyperaldosteronism types I and II in which both adrenal glands make too much aldosterone.  

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.