RESUMO
Prolactin-secreting adenomas are the most common pituitary tumors resulting in hyperprolactinemia which is one of the most important causes of female infertility with amenorrhea or galactorrhea. Although it is reported that spontaneous pregnancy occured in these patients using bromocriptine treatment or ovulation induction, it is very rare to find a pituitary tumor during a pregnancy by having neurological symptoms of headache, diplopia or visual disturbance. We experienced a case of normal delivery after symptom improvement and maintenance of pregnancy by administration of bromocriptine in a 27 year-old primigravida with diplopia and visual disturbance due to prolactin-secreting pituitary macroadenoma, which is diagnosed by brain MRI scan and serum prolactin level. A brief review of related literature was done.