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VIPoma
Definition:
VIPomas are exceedingly rare cancerous tumors that arise from a type of hormone-secreting cell in the pancreas. VIPomas cause diarrhea, hypokalemia (low blood potassium), and a decrease in the amount of acid in the stomach. Alternative Names:
Vasoactive intestinal peptide-producing tumor; Pancreatic endocrine tumor Text Continues Below
Causes, incidence, and risk factors:
VIPomas affect cells in the pancreas that produce vasoactive intestinal peptide (VIP). The cancer causes symptoms by producing high levels of this hormone. The cause is not known. VIPomas are usually diagnosed in adulthood, most commonly at age 50 or so. Women are more likely to be affected than men.
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