title: Islet cell hyperplasia of the pancreas presenting as hyperinsulinemic hypoglycemia in an adult.
abstract: A 72-year-old man who had suffered several episodes of syncope was diagnosed as having hyperinsulinemic hypoglycemia. Although imaging studies and percutaneous transhepatic portal venous sampling did not reveal the existence of any tumors in the pancreas, distal pancreatectomy was performed because the possibility of a small pancreatic endocrine tumor could not be completely rejected. External examination of the surgically removed pancreas did not reveal any tumors. Microscopically, the pancreas exhibited diffuse islet cell hyperplasia without nesidioblastosis. The patient remains euglycemic and has tolerated 24-hour fasting without any medication for a period of 10 months after the operation.
authors.affiliation: Department of Pathology, College of Medicine, Kyung Hee University, Seoul, Korea. kimyw@nms.kyunghee.ac.kr
authors.forename: Y W
authors.initials: YW
authors.lastname: Kim
authors.forename: Y K
authors.initials: YK
authors.lastname: Park
authors.forename: J H
authors.initials: JH
authors.lastname: Park
authors.forename: S M
authors.initials: SM
authors.lastname: Lee
authors.forename: J
authors.initials: J
authors.lastname: Lee
authors.forename: S W
authors.initials: SW
authors.lastname: Ko
authors.forename: M H
authors.initials: MH
authors.lastname: Yang
mesh_terms: D000368:Aged; D006801:Humans; D006946:Hyperinsulinism / Q000209:etiology*; D006965:Hyperplasia; D007003:Hypoglycemia / Q000209:etiology*; D007515:Islets of Langerhans / Q000473:pathology* / Q000601:surgery; D008297:Male; D010180:Pancreatectomy / Q000379:methods; D016896:Treatment Outcome