[Colo-duodenal fistula caused by cancer of the right colonic flexure treated by right extended hemicolectomy associated with a mucosal patch using a terminal ileal pedicled graft. Apropos of a case].

A considerable loss of substance of the duodenal wall makes its repair very difficult especially if this exceeds two-thirds of its circumference and is located around its entire second portion. Such a pathological or traumatic localization calls for extensive surgery-cephalic duodenopancreatectomy requiring several gastrojejunal, biliodigestive and the pancreaticodigestive shunts. If straightforward repair was possible, this could lead to stenosis and to a fistula producing complications and the death of the patient through peritonitis and hydroelectrolytic and metabolic imbalance. The mucous patch seems to us the last and only solution after other known techniques.