<prompt> Most common association in MEN 1 is -GastrinomaGlucagonomaInsulinomaLipoma  <response>: Ans. is a i.e. Gastrinoma Gastrinomas are the most common pancreatic islet tumors in MEN1 patients, accounting for over half of all pancreatic islet tumors in these patients. - Clinical Neuroendocrinology p. 342The most common islet neoplasm in MEN 1 secret pancreatic polypeptide is nonfunctional, while gastrinoma is a most frequent functional tumor. - Essentials of General SurgeryThe most common functional islet cell tumor in MEN1 is gastrinoma - Oncology: An Evidence-Based Approach MEN-1Wermer syndromeo It involves primarily three glands1 Parathyroid parathyroid hyperplasiaadenoma: Most common manifestation.2 Pituitary: Prolactinoma is the most common type of pituitary tumor in MEN-I.3 Pancreas: There is islet cell hyperplasiaadenoma.o Less common findings are pheochromocytoma, foregut carcinoid, lipomas and dermal angiofibroma 