A wolf in sheep's clothing: A non-functioning islet cell tumor of the pancreas masquerading as a microcystic (serous cystic) adenoma

Henning Gerke, Michaell F. Byrne, Huiwen Bill Xie, Erik K. Paulson, Douglas S. Tyler, John Baillie, Paul S. Jowell

Research output: Contribution to journalArticle

12 Scopus citations


Context: The endosonographic appearance of a microcystic "honeycomb" lesion of the pancreas usually indicates a serous cystic adenoma. Case report: We report a case of a non-functioning islet cell tumor that has the typical microcystic "honeycomb" appearance of a serous cystic adenoma. The implications for endoscopic ultrasound diagnosis and management of cystic pancreatic lesions are discussed. Conclusion: Islet cell tumors are a rare differential diagnosis of microcystic pancreatic lesions. If fine needle aspiration remains non-diagnostic preoperative distinction from serous cystic adenomas may be impossible.

Original languageEnglish (US)
Pages (from-to)225-230
Number of pages6
JournalJournal of the Pancreas
Issue number4
StatePublished - Jul 1 2004
Externally publishedYes



  • Diagnostic imaging
  • Endosonography
  • Insulinoma
  • Pancreatic neoplasms

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Hepatology
  • Endocrinology

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