MEN1 and pituitary gland adenoma: The genetic screening of other sporadic, young-onset pituitary adenoma patients with no evidence of other endocrine tumors should be focused on AIPmuts in first instance in cases of GH excess (with or without PRL cosecretion) and on MEN1 mutations, especially in cases of prolactinoma (9) because this can be the first manifestation of MEN1 (27).