Overview
Gastric neuroendocrine tumor type 3 (also called type 3 gastric NET, sporadic gastric carcinoid type 3, or gastric NET-3) is a rare type of stomach tumor that grows from special hormone-producing cells in the stomach lining called enterochromaffin-like (ECL) cells. Unlike other types of gastric neuroendocrine tumors, type 3 tumors are not linked to high stomach acid levels or other stomach conditions — they appear on their own, which is why they are called 'sporadic.' This type is considered the most aggressive of the three gastric NET types and tends to behave more like a traditional stomach cancer. These tumors can grow large, spread to nearby lymph nodes, and travel to other organs such as the liver. Because of this, they are taken very seriously. Symptoms can include stomach pain, nausea, bleeding in the digestive tract, and sometimes a flushing reaction in the skin. Diagnosis usually involves endoscopy, imaging scans, and biopsy. Treatment most often involves surgery to remove the tumor, and may also include medications that slow tumor growth (such as somatostatin analogs like octreotide or lanreotide), targeted therapies, or chemotherapy depending on how far the disease has spread. The outlook depends heavily on the stage at diagnosis, making early detection very important. Note: This condition has been marked as 'obsolete' in some medical databases, meaning it may now be classified under a broader or updated diagnostic category.
Also known as:
Key symptoms:
Stomach pain or discomfortNausea and vomitingBleeding in the stomach or intestines (may appear as dark or bloody stools)Unexplained weight lossSkin flushing (redness or warmth in the face and neck)DiarrheaFeeling full quickly after eatingFatigue or low energyAnemia (low red blood cell count) from internal bleedingAbdominal bloating
Sporadic
Usually appears on its own, not inherited from a parent
Adult
Begins in adulthood (age 18 or older)
Treatments
No FDA-approved treatments are currently listed for OBSOLETE: Gastric neuroendocrine tumor type 3.
View clinical trials →Clinical Trials
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New trials open frequently. Follow this disease to get notified.
Specialists
View all specialists →No specialists are currently listed for OBSOLETE: Gastric neuroendocrine tumor type 3.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to OBSOLETE: Gastric neuroendocrine tumor type 3.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
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Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.Has my tumor spread beyond the stomach, and what does that mean for my treatment options?,Is surgery an option for me, and what would recovery look like?,Should I be tested for somatostatin receptors, and am I a candidate for PRRT therapy?,What are the side effects of the treatments you are recommending, and how will they affect my daily life?,How often will I need follow-up scans and blood tests after treatment?,Are there any clinical trials I should consider for this type of tumor?,Should I see a specialist at a dedicated neuroendocrine tumor center?
Common questions about OBSOLETE: Gastric neuroendocrine tumor type 3
What is OBSOLETE: Gastric neuroendocrine tumor type 3?
Gastric neuroendocrine tumor type 3 (also called type 3 gastric NET, sporadic gastric carcinoid type 3, or gastric NET-3) is a rare type of stomach tumor that grows from special hormone-producing cells in the stomach lining called enterochromaffin-like (ECL) cells. Unlike other types of gastric neuroendocrine tumors, type 3 tumors are not linked to high stomach acid levels or other stomach conditions — they appear on their own, which is why they are called 'sporadic.' This type is considered the most aggressive of the three gastric NET types and tends to behave more like a traditional stomach
How is OBSOLETE: Gastric neuroendocrine tumor type 3 inherited?
OBSOLETE: Gastric neuroendocrine tumor type 3 follows a sporadic inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does OBSOLETE: Gastric neuroendocrine tumor type 3 typically begin?
Typical onset of OBSOLETE: Gastric neuroendocrine tumor type 3 is adult. Age of onset can vary across affected individuals.