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Acta Chir Belg. 2012 Jul-Aug;112(4):302-6.

Misleading diagnosis of renal artery stenosis by magnetic resonance angiography in a patient with primary aldosteronism.

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Services of Endocrinology, University Hospital of Mont-Godinne, Université Catholique de Louvain, Yvoir, Belgium.


A 24-year-old woman presented with severe hypertension. A diagnostic evaluation for secondary hypertension was undertaken. A duplex ultrasonography followed by a magnetic angiography suspected fibromuscular dysplasia. Unexpectedly, a contrast-enhanced angiography performed for renal angioplasty showed normal renal arteries. Primary aldosteronism was then evoked on the basis of decreased plasma renin and increased plasma aldosterone and aldosterone/renin ratio. After a CT-scan disclosed a left adrenal tumour, the patient underwent a left laparoscopic adrenalectomy. Pathological findings confirmed a benign adrenocortical adenoma. Blood pressure and aldosterone levels were normalized after surgery. Thus, clinicians should be aware of false-positive results of magnetic resonance angiography that could hide other causes of secondary hypertension.

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