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| | Metastatic Melanoma in the Small Bowel |
 | | Primary tumors of the small bowel are rare, accounting for only 2-3% of gastrointestinal tumors. |
 | | Small bowel primaries, in order of relative frequency, include carcinoid (often seen in the terminal ileum; profound desmoplastic reaction and calcification are typical), adenocarcinoma, lymphoma (often causes aneurismal dilatation of the bowel), GI stromal tumor, vascular malignancy, and fibrosarcoma. |
 | | Metastatic disease of the small bowel, on the other hand, is relatively common. |
| brighamrad.harvard.edu /Cases/bwh/hcache/351/full.html (692 words) |
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