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  • Title: Pre-operative localization of aldosterone-secreting adrenal adenomas.
    Author: Mcareavey D, Brown JJ, Cumming AM, Davidson JK, Duncan JG, Fraser R, Lever AF, Meek D, Robertson JI.
    Journal: Clin Endocrinol (Oxf); 1981 Dec; 15(6):593-606. PubMed ID: 7326851.
    Abstract:
    Techniques for pro-operative localization of aldosterone-secreting adrenal adenomas were studied in thirty-seven patients, each with hypertension and biochemical evidence of primary hyperaldosteronism and each later having adrenal surgery (thirty-two adenomas, five bilateral hyperplasia). Bilateral adrenal vein catheterization was attempted in all cases; it was successful on the left side in all patients and in 92% of cases on the right. Adrenal vein plasma samples were obtained from the left side in 92% and from the right in 73% of cases. Adrenal vein plasma aldosterone measurements correctly indicated the presence of tumour in twenty-eight cases but falsely predicted unilateral adenoma in two cases of bilateral adrenal hyperplasia. Adrenal venography also correctly predicted unilateral adrenal adenomas in twenty-six cases but falsely suggested the presence of tumour in three cases of bilateral adrenal hyperplasia. Computed tomography (CT) was used in the last eight cases. In seven instances the predictions (six adenomas, one bilateral adrenal hyperplasia) were confirmed at surgery. However, the remaining patient harboured an adenoma 20 mm in diameter which was not detected by CT although diagnosed both by adrenal venography and adrenal vein aldosterone measurements. Ultrasound detected adenoma in only three of twenty-two cases examined. Although further comparative studies of the type described here are required, the results of computed tomography are promising and suggest that this non-invasive technique might well become the first choice procedure in localizing aldosterone-secreting adenomas.
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