[Mixed corticomedullary tumor].
Presse Med 1998;
27:1272-4. [PMID:
9765645]
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Abstract
BACKGROUND
Pheochromocytoma and primary hyperaldosteronism rarely occur simultaneously. Few cases have been reported in the literature.
CASE REPORT
A patient explored for hypertension was found to have hypokalemia related to primary hyperaldosteronism. Pathology examination of the ablated adrenal showed a co-existing pheochromocytoma suspected at history taking although urine catecholamines were normal.
DISCUSSION
Different pathogenic hypothesis have been proposed. Such dual tumors could be a simple coincidence, occur in a particular genetic setting, be related to direct contact between cortical and medullary tissue leading to reactional cortical hyperplasia, pheochromocytoma produced factors stimulating aldosterone synthesis, or factor X, a substance produced by cortical adenomas and favoring growth of the pheochromocytoma.
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