Journal of Korean Endocrine Society 1994;10(3):273-277.
Published online November 6, 2019.
A Case of Nesidioblastosis in Adult with Hyperinsulinemic Hypoglycemia.
Young Kee Shong, Hong Kyu Kim, Young Joo Min, Joong Yeol Park, Sung Kwan Hong, Ki Up Lee, Duck Jong Han, Ho Jeong Lee, Ghi Su Kim, Gyung Yub Gong
Nesidioblastosis is a primarily childhood disease which is often associated with hyperinsulinemic hypoglycemia. It is very rarely found in adults. Only a few well documented cases are found in the world interature. The authors have recently experienced a case of nesidioblastosis in an adult. A 55-year-old man was admitted due to repeated episodes of reversible loss of consciousness. Hyperinsulinemic hypoglycemia was documented. Under the presumptive diagnosis of insulinoma, localization procedures were done but no definite tumor was found. Only suspicious gradient in insulin concentration was found around the head of pancreas by percutaneous transhepatic portal venous sampling. Exploratory laparotomy was performed and Whipple's operation was done. Seventy percent of proximal pancreas was removed. Histomorphometric study of the resected specimen revealed uneven graded hyperplasia of the islet cells with the most profuse hyperplasia in the head region and progressive decrease in the degree of hyperplasia to the body and tail. The patient remains euglycemia until 6 months after operation since immediate postoperative period and can tolerate 24 hour fasting without any medication.
Key Words: Nesidioblastosis, Adult, Hypoglycemia

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