PMC5772064_01
Upper endoscopy showing the duodenocolonic fistulae.
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F1
Upper endoscopy showed a fistula between the second portion of duodenum and the right colon (Figure 1).
Upper endoscopy suggestive of solid endoluminal viscera in the lumen of the right colon.
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F2
Through the fistula tract, a solid viscera with a nodular mucosa was visible in the lumen of the right colon (Figure 2).
(A) Coronal and (B) axial computed tomography of the duodeno-colo-renal fistulae.
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F3
Abdominal computed tomography revealed a mass between the right colon, the second portion of duodenum, and the right kidney; this allowed the passage of oral contrast between these structures, confirming that the solid viscera seen on endoscopy was in fact the right kidney (Figure 3).