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- Physical Examination
- • Abdominal mass or painful distension.
- • Rectal bleeding—possibly caused by ulcerations in the gastrointestinal tract— which may result in anemia .
- • A partial or complete obstruction of the intestinal tract.
- • Jaundice , which may be due to a tumor in the duodenum or to liver metastasis .
- • Bowel kinking (intussusception).
- • Often fatty fluid (chylous ascites) can collect in the abdomen.
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- Blood and Other Tests
- • Blood counts usually show iron deficiency anemia when bleeding occurs.
- • The level of carcinoembryonic antigen (CEA) in the blood is often elevated with adenocarcinomas.
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- Imaging
- • The most useful x-rays are an upper gastrointestinal and a small bowel series. These can detect a small cancer
- (often a "napkin ring" deformity) or a polyp .
- • X-rays showing small bowel thickening with ulceration may indicate a lymphoma.
- • An abdominal CT scan can help identify lesions outside the bowel, including metastases.