• Internal medicine · Nov 2024

    Case Reports

    Small Insulinoma Followed-up as an Indolent Pancreatic Tumor: A Case Report.

    • Hiroki Sato, Shozaburo Fujii, Tetsuhiro Okada, Hidemasa Kawabata, Yuki Kamikokura, and Mikihiro Fujiya.
    • Division of Gastroenterology, Department of Internal Medicine, Asahikawa Medical University, Japan.
    • Intern. Med. 2024 Nov 1; 63 (21): 292929372929-2937.

    AbstractA woman in her 60s presented with a small pancreatic head tumor. Imaging studies revealed a 13-mm well-defined pancreatic head tumor. A neuroendocrine neoplasm was suspected, and the patient opted for observation at that time. After 8 months, the patient began experiencing sweating while fasting, and blood tests during regular follow-up visits showed hypoglycemia. Hypoglycemia was induced during fasting test. The tumor exhibited clear features of an insulinoma during follow-up observation. While small neuroendocrine neoplasms are often managed through observation, caution should be exercised regarding their transformation into functional neuroendocrine tumors.

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