coloduodenal fistula. Axial contrast-enhanced CT depicting a colonic tumour (arrow) extending to and infiltrating the third portion of the duodenum (small circle). There was also a small quantity of perihepatic ascitic fluid.
coloduodenal fistula. Coronal recontruction depicting the fistulous communication between the proximal transverse colon (orange lines) and the duodenum (green lines).