Primary malignant tumors of the small intestine.
D000230:Adenocarcinoma; D000328:Adult; D000367:Age Factors; D000368:Aged; D002277:Carcinoma; D004379:Duodenal Neoplasms; D005260:Female; D005767:Gastrointestinal Diseases / Q000150:complications; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000175:diagnosis / Q000601:surgery; D007421:Intestine, Small / Q000601:surgery; D007583:Jejunum; D008223:Lymphoma; D008297:Male; D008545:Melanoma; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011379:Prognosis; D012509:Sarcoma; D012737:Sex Factors