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652 Multiple endocrine neoplasia type 1

definition

Multiple endocrine neoplasia Type 1 (MEN1) is a frequent form of MEN (see this term), a rare inherited cancer syndrome, characterized by the development of neuroendocrine tumors of the parathyroid, pancreas, and anterior pituitary gland, and less commonly the adrenal cortical gland, with other non-endocrine tumors in some patients.