Pheochromocytomas are tumors of the adrenal medulla (the inner part of the adrenal gland). The adrenal medulla normally produces adrenaline, one of the body's major stress hormones. Adrenaline does several things to make it possible to react to a stressful situation: it increases blood sugar concentration, increases breakdown of fat for energy, increases blood flow to muscles, makes the pupils dilate to let more light reach the eyes, etc. When adrenaline is oversecreted, which is what happens in a pheochromocytoma, all of these effects of adrenaline are exaggerated. The increase in blood sugar concentration is what you're referring to. An exaggerated blood glucose concentration is called hyperglycemia.
cathecolamines producing vasoconstriction, causing pallor.
Pheochromocytoma occurs in the Nervous System and in the Adrenal Gland.
One kind of adrenal tumor that is often benign is a pheochromocytoma.
Pheochromocytoma is a rare tumor of the adrenal glands that produces adrenaline. There are approximately 1,000 new cases of pheochromocytoma tumors in the United States each year.
a tumor of special cells (called chromaffin cells), most often found in the middle of the adrenal gland.
Hyperglycemic agent
glucagon growth hormone
The adrenal gland
If a pheochromocytoma is suspected, urine and/or a blood test are usually recommended. A test called "24-hour urinary catacholamines and metanephrines" will be done.
Localized benign pheochromocytoma means that the tumor is found only in one area, is not cancer, and cannot spread to other tissues of the body
Alpha blockers are used to control hypertension by blocking the vasoconstrictive effects of excess catecholamines released by the tumor. Beta blockers are used to manage symptoms such as palpitations and tremors caused by the excess catecholamines. The combination of both alpha and beta blockers helps to stabilize blood pressure and control symptoms in patients with pheochromocytoma.
hyperglycemic factor