Diagnosis of insulinoma by endoscopic ultrasonography: A case report

C. D. Wang, C. S. Wang, L. S. Lee, J. J. Chang, L. Y. Liao, M. H. Liu, S. H. Lee, J. D. Liu, P. H. Chen, T. W. Huang

Research output: Contribution to journalArticlepeer-review


A 51-year-old woman was hospitalized for episodic loss of consciousness over a one year period. The presence of insulinoma was indicated clinically and biochemically; but conventional ultrasonography (US) and computed tomography (CT) failed to reveal a tumor, thus surgical intervention was deferred. The patient was readmitted 3 years later with an increasing frequency of hypoglycemic episodes. Conventional US showed a suspicious, small, ill-defined hypoechoic mass in the pancreatic head. CT and selective angiography revealed equivocal results. Endoscopic ultrasonography (EUS) clearly demostrated a well-demarcated, echo-free mass, measuring 2x0.8 cm, in the head of the pancreas. Insulinoma was confirmed by surgical pathologic examination. These results indicate that the EUS provides a distinct advantage in pre-operative visualization of insulinomas.

Original languageEnglish
Pages (from-to)215-219
Number of pages5
JournalChinese Journal of Gastroenterology
Issue number3
Publication statusPublished - Dec 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Gastroenterology


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