Question

______ may occur as a single tumor or as more than one growth. It usually develops in the center (medulla) of one or both adrenal glands.

A) Pheochromocytoma
B) Aldosterone-producing adenoma
C) Cushing's syndrome
D) Addison's disease

Answer 1

Pheochromocytoma is the condition that develops as one or more growths in the adrenal medulla and leads to excessive production of catecholamines, causing hypertension.

Step-by-step explanation:

The condition that may occur as a single tumor or as more than one growth, and usually develops in the center (medulla) of one or both adrenal glands is known as Pheochromocytoma. Pheochromocytomas are characterized by the excessive production of catecholamines, which can result in hypertension. This condition differs significantly from the hypersecretion conditions such as Cushing's syndrome, which is caused by excessive production of cortisol often due to a pituitary tumor, and from the hyposecretion condition known as Addison's disease, characterized by the low secretion of corticosteroids. While Aldosterone-producing adenoma results in hypersecretion of aldosterone from the adrenal cortex, pheochromocytoma specifically affects the adrenal medulla.