A tumor of the adrenal medulla

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A tumor of the adrenal medulla is called a pheochromocytoma. It causes excess secretion of adrenaline and noradrenaline hormones, which could lead to high blood pressure, rapid heart rate, anxiety, sweating, and headaches. In rare cases, it can cause life-threatening hypertensive crisis if left untreated. Addison's disease is caused by a deficiency in adrenal hormones, while excess secretion of cortisol is usually associated with a tumor of the adrenal cortex.

A Tumor of the Adrenal Medulla