Introduction

Pheochromocytomas are tumors of chromaffin cells located in the paraganglionic system and can occur in the adrenal glands or in the sympathetic chain.

It has been estimated that one in two million people in the United States is affected each year by extra-adrenal pheochromocytoma. Sporadic pheochromocytoma has been found in 0.002% to 0.13% of the population, and is the sole cause of hypertension in less than 1% (1,2) of all newly diagnosed hypertension. In 15% to 50% of hereditary causes, of which von Hippel-Lindau disease and multiple endocrine neoplasia type 2 are the most common types, pheochromocytoma is present (3). About 10% of pheochromocytomas are extra-adrenal, although recent reports suggest that as many as 18% may occur in extra-adrenal locations (4,5).

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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