<unk> s are rare neuroendocrine tumors with an incidence estimated at one to four new cases per million persons per year.<unk>  is one of the most common types of tumors arising from the islets of Langerhans cells (pancreatic endocrine tumors). Estimates of malignancy (metastases) range from 5 to 30%. Over 99% of<unk> s originate in the pancreas, with rare cases from ectopic pancreatic tissue. About 5% of cases are associated with tumors of the parathyroid glands and the pituitary (multiple endocrine neoplasia type 1) and are more likely to be multiple and malignant. Most<unk> s are small, less than 2 cm.
Insulinoma
Reactive hypoglycemia
Glucagonoma
Metastatic insulinoma
Somatostatinoma
Congenital hyperinsulinism
Idiopathic hypoglycemia
Adie syndrome