If prolactin remains high after surgery for a pituitary tumor, it is most often considered in patients whose prolactin was greater than 500 ng/mL prior to surgery and who have poor tumor control with medication. If prolactin remains elevated after surgery, treatment with oral bromocriptine should be continued after surgery, and the therapeutic effect will usually appear within 4-6 weeks after surgery. Continued medication after surgery can correct the increased levels of prolactin. In addition to this, patients after pituitary tumor surgery need to be routinely followed up on a regular basis at 1 month, 3 months, 6 months, and then annually after surgery. Because pituitary tumors are prone to recurrence after surgery, early diagnosis and early treatment are needed for recurrent tumors.