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HOME > Diabetes Metab J > Volume 28(1); 2004 > Article
Case Report A Case of Primary Insulin Autoimmune Syndrome in a Patient Suspected of Having an Insulinoma.
Sung Ju Lee, Jee Hyun Kong, Joo Young Nam, Jong Suk Park, Chul Sik Kim, Dol Mi Kim, Chul Woo Ahn, Bong Soo Cha, Sung Kil Lim, Kyung Rae Kim, Hyun Chul Lee
Diabetes & Metabolism Journal 2004;28(1):45-50
DOI: https://doi.org/
Published online: February 1, 2004
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Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.

Insulin autoimmune syndrome consists of fasting hypoglycemia, hyperinsulinemia and detectable insulin-binding antibodies in patients never been exposed to exogenous insulin. Most affected patients present with other autoimmune disorders, most often Graves' disease. A significant increase in the insulin and C-peptide plasma concentrations and the presence of other anti organ antibodies are also observed. Awareness of insulin autoimmune syndrome hypoglycemia is important as this may produce severe neuroglycopenic symptoms, which may be confused with the presence of an insulinoma. The correct diagnosis is important to avoid unnecessary surgical intervention in patients who are best treated with conservative support, watchful waiting, or in some cases, immunosuppressive therapy. Herein, a case of autoimmune insulin syndrome, suspected as being an insulinoma is reported.

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