VIPoma

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Pancreas

Vasoactive intestinal peptide-producing tumor; Pancreatic endocrine tumor

• Watery diarrhea (often massive amounts)
• Hypokalemia (low blood potassium), which can cause leg cramps
• Low acid in the stomach (achlorhydria)
• Nausea
• Dehydration
• Abdominal pain and cramping
• Weight loss
• Facial flushing or redness

• High level of VIP (vasoactive intestinal peptide) in the blood
• High volume of diarrhea (continues despite fasting)

Fasting is one way to test for VIPoma.

The physician may also request that the stool be collected and analyzed to determine electrolyte content.

A CT scan or MRI may be ordered to determine the location of the tumor.

Review Date: 09/11/2006
Reviewed By: Rita Nanda, M.D., Department of Medicine, Section of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.