During routine subtyping of confirmed primary aldosteronism by adrenal vein sampling extra plasma samples are drawn from both renal veins and from inferior vena cava. Plasma renin concentration and renin activity are analysed from these samples. Adrenal computed tomographies are analysed for cysts and other possible pathology by a blinded radiologist. Aim is to evaluate correlation between renal pathology and renin measurements.
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Association of any renal cyst finding to graded baseline renin concentration (mU/L)
Timeframe: Baseline