Insulinoma and gastrinoma syndromes from a single intrapancreatic neuroendocrine tumor.
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BACKGROUND
The insulinoma syndrome is marked by fasting hypoglycemia and inappropriate elevations of insulin. The gastrinoma syndrome is characterized by hypergastrinemia, ulcer disease, and/or diarrhea. Rarely, insulinoma and gastrinoma coexist in the same patient simultaneously.
OBJECTIVE
Our objective was to determine the cause of a patient's hypoglycemic episodes and peptic ulcer disease.
METHODS
This is a clinical case report from the Clinical Research Center of the National Institutes of Health.
METHODS
One patient with hypoglycemic episodes and peptic ulcer disease had a surgical resection of neuroendocrine tumor.
RESULTS
The patient was found to have a single tumor cosecreting both insulin and gastrin. Resection of this single tumor was curative.
CONCLUSIONS
A single pancreatic neuroendocrine tumor may lead to the expression of both the hyperinsulinemic and hypergastrinemic syndromes.
