PRL and hyperprolactinemia: The only two features which differentiated patients in the two outcome groups were PRL levels before withdrawal, which were higher in case of hyperprolactinemia recurrence (median 216.2, range 21.2–464.3 mIU/L, vs. median 94.3, range 29.7–402.8 mIU/L for the remission group; p = 0.049), and prevalence of postmenopausal women (10/23 in the remission group vs. 4/39 in the recurrence group, p < 0.01).