Question

a total pituitary impairment that brings about progressive and general loss of hormone activity?
a pheochromocytoma
b panhypopituitarism
c cretinism
d diabetes mellitus

Explanation:

• Pheochromocytoma: It is a tumor of the adrenal medulla that secretes excessive amounts of catecholamines (such as epinephrine and norepinephrine), not related to pituitary - hormone loss.
• Panhypopituitarism: This is a condition where there is a total or near - total loss of pituitary hormone activity. The pituitary gland is responsible for secreting many hormones (such as growth hormone, thyroid - stimulating hormone, adrenocorticotropic hormone, etc.). When there is an impairment (due to various causes like tumors, infections, or autoimmune disorders), it can lead to a progressive and general loss of hormone activity.
• Cretinism: It is usually due to severe hypothyroidism (lack of thyroid hormone) during fetal development or early childhood, mainly affecting growth and mental development, not a general pituitary - hormone loss.
• Diabetes mellitus: It is related to problems with insulin (either lack of insulin production in type 1 or insulin resistance in type 2), not a general pituitary - hormone loss.

Answer:

B. panhypopituitarism