gastrointestinal disorders
Small Bowel Tumors
Introduction
Small-bowel tumors account for 1 to 5% of gastrointestinal tumors. Small-bowel cancer accounts for an estimated 12,070 cases and about 2,070 deaths in the United States annually ( General reference ). Diagnosis is by enteroclysis. Treatment is surgical resection. Benign tumorsinclude leiomyomas, lipomas, neurofibromas, and fibromas. All may cause abdominal distention, pain, bleeding, diarrhea, and, if obstruction develops, vomiting. Polyps are not as common as in the colon. Adenocarcinoma,a malignant tumor, is uncommon. Usually it arises in the duodenum or proximal jejunum and causes minimal symptoms. In patients with Crohn disease involving the small-bowel, the tumors tend to occur distally and in bypassed or inflamed loops of bowel. Primary malignant Overview of Lymphoma None (previously known as Overview of Carcinoid Tumors ) occur most often in the small bowel, particularly the ileum, and in the appendix; in these locations, larger lesions can become malignant. Multiple tumors occur in 50% of cases. Of those Kaposi Sarcoma , 