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Start free with EleplanNeuroendocrine tumor of stomach
ORPHA:100075Disease
Also called GNET · Gastric NET · Gastric neuroendocrine tumor · NET of stomach
What it is
A rare subtype of neuroendocrine neoplasm, arising from enterochromaffin-like cells in the stomach, with a variable clinical presentation, disease course and prognosis, depending on the disease type and histological grade. Most patients are asymptomatic, with diagnosis usually occurring incidentally during gastroscopy, however, symptoms of dyspepsia, anemia, pain, weight loss and gastrointestinal bleeding can be observed. Association with Zollinger-Ellison syndrome and multiple endocrine neoplasia type I has been reported.
Key facts
- Prevalence
- 1-9 / 100 000 (Europe)
- Age of onset
- Adult, Elderly
- Inheritance
- Not applicable
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
7These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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