In most cases the tumor secretes only gonadotropins (either one, most frequently FSH, or both), but co-secretion of other pituitary hormones, namely Thyroid Stimulating Hormone (TSH) [57], Prolactin (PRL) [58], and Adrenocorticotropic Hormone (ACTH) [59], was reported. The gene discussed is PRL; the disease is neoplasm.