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Secondary aortoenteric fistula: diagnostic assessment
| Diagnosis (2–5, 7, 9, 12, 13, 15, 18, 20, 23, 25, 29–34) | Exploratory laparotomy | Sensitivity and specificity 91–100% |
| Computerized tomography scan | Sensitivity 40–100%; specificity 33.3–100% | |
| Computerized tomography angiography | Sensitivity 33–100% | |
| EGD | Sensitivity 10–80%, specificity 8.3–75%, accuracy 30% | |
| Radionuclide scanning with technetium-99-labeled leukocytes | Sensitivity 0%, specificity 0–80% | |
| Nuclear medicine RBC | Sensitivity 0% |
