CCRN Nursing Exam Prep - Adult Critical Care

Answer: B - Pheochromocytoma is a tumor of the adrenal medulla that causes an increased secretion of catecholamines that can elevate the blood pressure.

Pheochromocytoma is a rare tumor that develops in the cells of the adrenal gland, which is located above the kidneys. The adrenal gland produces hormones such as adrenaline and noradrenaline, which help regulate heart rate, blood pressure, and other important functions in the body. Pheochromocytoma tumors can produce excessive amounts of these hormones, leading to a condition called pheochromocytoma syndrome.