Figure 5
Duodenal pathology of aorto-duodenal fistula. A. (×4) single, small, non-caseating granuloma with multinucleated foreign body giant cell reaction (arrow) and chronic transmural inflammation with vascular congestion, consistent with a fistula. L(lumen), m(mucosa), sm(submucosa), mp(musularis propria). B. Close-up view of duodenal pathology. (×10) Non caseating granuloma with Langerhans giant cell (arrow).