Adenocarcinoma occurring in association with a chronic sinus tract and biliary fistula

Malignant change can occur in various types of fistulae, draining sinuses, chronic inflammatory tracts, scars, and old wounds. An unusual case of an adenocarcinoma arising in association with a chronic sinus tract and biliary-cutaneous fistula of twenty years' duration is presented. Literature review reveals this to be the first reported case.