Your friend is concerned because although she has never been pregnant,her breasts are producing milk.When she went to the doctor,he sent her to the MRI lab for a brain scan.She was too embarrassed to ask the doctor why.What do you tell her?
A)"They were actually scanning your thyroid gland,not your brain.Are you getting enough iodine in your diet?"
B)"The MRI technician must have mixed up your patient records.He should have done a thoracic scan instead."
C)"LH and FSH from the posterior pituitary stimulate milk production.The doctor wants to rule out excess levels of estrogen in the pituitary stalk."
D)"Prolactin from the anterior pituitary stimulates milk production.The doctor probably wants to rule out a pituitary tumor."

Question

Quizplus · Accepted Answer

The production of milk in breasts without pregnancy is often caused by excess prolactin from the pituitary gland. A pituitary tumor can cause an increase in prolactin levels, which is why the doctor may have ordered an MRI to check for the presence of such a tumor. Therefore, the best choice is D.

Your Friend Is Concerned Because Although She Has Never Been