<prompt> What is the most common presentation of MEN1?Entero-pancreatic tumourAngio-fibromaPituitary adenomaParathyroid Adenoma  <response>: MEN 1 11q13 Parathyroid adenoma 90 Entero-pancreatic tumour 30-70 Pituitary adenoma 15-50 Associated tumours Angiofibromas Collagenoma 85 70 