This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Small intestine adenocarcinoma is one type of small bowel cancer, usually occurring in the duodenum or jejunum, that begins in the gland cells. The small intestine is part of the body’s digestive system, which also includes the esophagus, stomach, and large intestine. The exact cause is still unknown, but it may be due to DNA changes in the small intestine adenocarcinoma cells. The symptoms of small bowel tumors are often vague. The most common symptoms are pain in the belly (which may be the first symptom), weight loss, weakness, fatigue and low red blood cell counts (anemia). The treatment and prognosis for small intestine cancer depends on its stage (tumor size and site) and the presence of metastases. For early stage cancer, surgery may be all that is needed. For more advanced cancer chemotherapy or radiation therapy may be required.
Please visit the National Cancer Institute website for additional information:
Small Intestine Cancer Treatment (PDQ®)–Patient Version
For more information, visit GARD.