ISM / MICHEL BRAUNER / SCIENCE PHOTO LIBRARY ISM / MICHEL BRAUNER / SCIENCE PHOTO LIBRARY
Adrenal gland tumour. Computed tomography (CT) scan of the abdomen of a 48-year-old female patient with Conn's syndrome. This condition is a result of an adenoma (benign tumour) of the adrenal cortex, coloured dark grey and located just above the right kidney (white) on the left of the image. The adrenal glands are situated over the top of each kidney. Although benign, such growths can cause problems as they may affect production of the hormones cortisol, aldosterone or androgens. In this case over-production of aldosterone has resulted in Conn's syndrome. Aldosterone causes increase in sodium and water retention and potassium excretion in the kidneys, leading to arterial hypertension (high blood pressure).
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