This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
Galactorrhea, a milky discharge from the nipple in nonpregnant women, is most likely to be associated with which of the following? 
Select and explain. 
A. Fibroadenoma, B. Tubular adenoma, C. Pituitary adenoma, D. Hyperparathyroidism
C: Pituitary adenoma
Answer: C: Pituitary adenoma 
Explanation: Galactorrhea is fairly common up to old age. The discharge may vary in color from brown to milky. Hormonal causes are associated with elevated prolactin levels or with pituitary or thyroid disorders. Tranquilizers have also been implicated. Simple abscesses do not cause galactorrhea.