insulinoma

An insulinoma is a tumor of the pancreas that is derived from beta cells and secretes insulin. It is a rare form of a neuroendocrine tumor. Most insulinomas are benign in that they grow exclusively at their origin within the pancreas, but a minority metastasize. Insulinomas are one of the functional pancreatic neuroendocrine tumor (PNET) group ('functional' because it increases production of insulin). In the Medical Subject Headings classification, insulinoma is the only subtype of 'islet cell adenoma'.Beta ...