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A prolactinoma is a benign tumor of the pituitary gland (adenoma) that produces an excessive amount of the hormone prolactin. In women, hyperprolactinemia is characterized by irregular menstrual periods (amenorrhea), infertility and production of breast milk in women who are not pregnant (galactorrhea). The most common symptom in men is impotence.



This infomation was taken from the University of Michigan Health System's Health Library.