ProlactinomaPituitary NeoplasmsHyperprolactinemiaBromocriptineErgolinesLactotrophsProlactinGalactorrheaGrowth Hormone-Secreting Pituitary AdenomaAdenomaDopamine AgonistsPituitary GlandLisurideReceptors, Dopamine D2AcromegalySphenoid BoneHypopituitarismHormone AntagonistsHypogonadismReceptors, SomatostatinDopamineDrug Resistance, NeoplasmImmunohistochemistryAntineoplastic AgentsTreatment Outcome