A Tumor of the Adrenal Medulla

Question

A tumor of the adrenal medulla
A) causes life-threatening low blood pressure.
B) is called a pheochromocytoma.
C) causes Addison's disease.
D) causes excess secretion of cortisol.

Accepted Answer

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.