Thus, the approach to the patient with the prolactin-secreting macroadenoma who desires pregnancy can be either expectant or prophylactic. The author believes that as the risk of swelling of the adenoma is less than twenty per cent, it is reasonable to adopt an expectant policy. Others suggest that pituitary decompression should be performed surgically, and still others recommend that external pituitary irradiation is given. It is not clear whether external pituitary irradiation or decompression of the pituitary by surgery, or both, completely prevent symptom-generating pituitary enlargement. It should be stressed that so far, no patient has become permanently blind following expansion of the tumour during pregnancy.
