Humans have two adrenal glands located above the kidneys. They make substances called hormones that regulate blood pressure, fl uid metabolism, and other body functions. A pheochromocytoma is an uncommon tumor of the adrenal gland. Rarely, this type of tumor develops outside the adrenal glands. Pheochromocytomas secrete a hormone called epinephrine or related compounds. High blood pressure, heart palpitations, headaches, and sweating are the result. Pheochromocytomas account for a very small number of hypertension cases....

Cushing’s syndrome is a rare endocrine illness caused by exposure of body tissues to too much cortisol in the bloodstream. Produced by the adrenal glands, cortisol is a substance (hormone) that helps the body control blood pressure and respond to stress. Extra cortisol, however, produces abnormal body changes. Cushing’s syndrome affects both men and women of any age but occurs most often in women 25 to 45 years old. It may increase the risk of getting diabetes, hypertension, osteoporosis, and obesity...