Opinion statement
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Adenocarcinomas of the small intestine are rare tumors accounting for about 1% of all gastrointesinal neoplasms.
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These cancers have a poor prognosis, perhaps because of the nonspecific symptoms and delay in diagnosis.
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They can arise in the setting of Crohn’s disease, celiac sprue, and inherited colon cancer syndromes like familial adenomatous polyposis (FAP).
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As most of these lesions occur in the duodenum or proximal jejunum, upper endoscopy and push enteroscopy are reasonable initial diagnostic tests. Enteroclysis and intraoperative enteroscopy may be complementary to these procedures.
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Surgical cures may be possible in patients with tumors detected at an early and resectable stage. Endoscopic therapy is useful for cure of premalignant lesions and palliation of unresectable disease.
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Chemotherapy and radiotherapy have limited impact in the management of these tumors, because they are often of advanced stage at the time of presentation.
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Tumbapura, A., Kuwada, S. & DiSario, J.A. Adenocarcinoma of the small intestine. Curr Treat Options Gastro 3, 51–57 (2000). https://doi.org/10.1007/s11938-000-0061-4
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DOI: https://doi.org/10.1007/s11938-000-0061-4