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Start free with EleplanAdenocarcinoma of the small intestine
ORPHA:104075Disease
Also called Adenocarcinoma of the small bowel
What it is
Small bowel adenocarcinoma (SBA) is a rare small intestinal malignancy, most commonly located in the duodenum (55% of cases) but also rarely in the jejunum and ileum, which is usually discovered at an advanced stage in the 6th to 7th decade of life due to non-specific symptoms at presentation such as nausea, abdominal pain and weight loss. In some cases it is asymptomatic, and therefore usually has a poor prognosis.
Key facts
- Prevalence
- 1-9 / 1 000 000 (annual incidence, Europe)
- Age of onset
- Adult
- 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.
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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