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Small Bowel Tumors

Small bowel tumors are uncommon. Although benign tumors are found more frequently at autopsy, malignant tumors cause symptoms more frequently, leading to radiologic examinations and surgery. Small bowel malignancies account for only 1% to 2% of all gastrointestinal tract malignancies. In patients with a known or suspected primary malignancy, a tumor occurring in the small bowel is more likely to be a metastasis than a primary small bowel malignancy. This article describes the radiographic findings of various small bowel tumors. Differential diagnosis is discussed in relation to each of the individual entities.