Insulinoma with a History of Epilepsy: Still a Possible Misleading Factor in the Early Diagnosis of Insulinoma

  • Murakami Takaaki
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Yamashita Takafumi
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Yabe Daisuke
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Masui Toshihiko
    Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Kyoto University Graduate School of Medicine, Japan
  • Teramoto Yuki
    Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Japan
  • Minamiguchi Sachiko
    Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Japan
  • Hirota Keisho
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Ogura Masahito
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Nagashima Kazuaki
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan
  • Inagaki Nobuya
    Department of Diabetes, Endocrinology and Nutrition, Kyoto University Graduate School of Medicine, Japan

Abstract

<p>A delayed diagnosis of insulinoma remains a clinical issue. Hypoglycemic symptoms can mimic neuropsychiatric disorders such as epilepsy. A 27-year-old woman with a history of epilepsy and anti-epileptic drugs (AEDs) developed repeated seizures and neuropsychiatric symptoms after a 9-year asymptomatic interval. She had received transient treatment with AEDs before the possibility of hypoglycemia was considered. Following a clinical diagnosis of insulinoma, distal pancreatectomy was performed; her seizures didn't occur again. The early diagnosis of insulinoma requires vigilance not only for hypoglycemia in patients with neuropsychiatric symptoms but also for the possible masking effects of a history of epilepsy and preceding AED usage. </p>

Journal

  • Internal Medicine

    Internal Medicine 56 (23), 3199-3204, 2017

    The Japanese Society of Internal Medicine

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