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Living with VIPoma

A tumor, usually in the pancreas, that releases a hormone causing heavy watery diarrhea and low potassium.

Understanding VIPoma

VIPoma is a tumor that releases vasoactive intestinal peptide, a hormone-like substance that causes watery diarrhea.

The hormone can also cause low potassium, low stomach acid, and relaxed smooth muscles. VIPomas come from pancreatic islet cells and are usually in the pancreas, but can occur elsewhere. They can release other hormones too. It can occur at any age.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Watery diarrhea
  • Dehydration
  • Weight loss
  • Nausea and vomiting
  • Muscle weakness and spasms
  • Tiredness and low appetite

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists, digestive system specialists and hormone specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Carcinoid Cancer Foundation and Neuroendocrine Tumor Research Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Cancer specialists (oncologists); Digestive system specialists (gastroenterologists); Hormone specialists (endocrinologists)
Expert care
Expert lists: Carcinoid Cancer Foundation, Neuroendocrine Tumor Research Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Carcinoid Cancer Foundation and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Where exactly is my tumor located?
How can we manage dehydration and low potassium?
Which specialists should be on my care team?

Quick facts

Symptoms usually startany time in life

GARD says the tumor releases a hormone-like substance that causes the symptoms. It comes from pancreatic islet cells. GARD doesn't list a gene.

EndocrineGastrointestinal

Also known as: diarrheogenic islet cell tumor; diarrheogenic islet cell tumour; malignant vasoactive intestinal peptide-secreting tumor; malignant vasoactive intestinal peptide-secreting tumour; pancreatic cholera; pancreatic vipoma

Patient organizations

Source: NIH GARD · VIPomaGARD ID 3787 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with VIPoma.

Explore the VIPoma blog

Explore research for VIPoma

Explore actively recruiting VIPoma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for VIPoma with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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I can help you find recruiting VIPoma studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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