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Living with Pancreatic insulin-producing neuroendocrine tumor

A rare tumor in the pancreas that makes too much insulin, causing low blood sugar.

Understanding Pancreatic insulin-producing neuroendocrine tumor

Pancreatic insulin-producing neuroendocrine tumor (insulinoma) is a rare tumor of the hormone-making cells of the pancreas.

The tumor makes too much insulin, which lowers blood sugar. About 90 percent of insulinomas are benign (not cancer). It can occur at any age. People with certain genetic syndromes, such as multiple endocrine neoplasia type 1 or von Hippel-Lindau syndrome, are at higher risk.

Signs & symptoms

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

  • Sweating
  • Pounding heartbeat (palpitations)
  • Tremor
  • Hunger and weight gain
  • Confusion or changes in awareness
  • Seizures

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

    National Pancreas 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: National Pancreas 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 National Pancreas 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
What tests can confirm that low blood sugar is caused by a tumor?
What are the treatment options, and who should be on my care team?
Should I be checked for a related genetic syndrome?

Quick facts

Symptoms usually startany time in life

In most cases, GARD says the cause is unknown. People with some genetic syndromes, such as multiple endocrine neoplasia type 1, are at higher risk.

EndocrineGastrointestinal

Also known as: beta cell neoplasm; beta cell tumor; beta cell tumor of pancreas; beta cell tumor of the pancreas; beta cell tumour; beta cell tumour of pancreas

Patient organizations

Source: NIH GARD · Pancreatic insulin-producing neuroendocrine tumorGARD ID 3010 · 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 Pancreatic insulin-producing neuroendocrine tumor.

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  • Recruiting studies from ClinicalTrials.gov
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  • Eligibility is confirmed by the study team

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