<unk>  is a surgical procedure where a fistulous tract is excised (cut out) completely. This is compared with fistulotomy, where the fistulous tract is merely laid open to heal. Fistulae are a feature of many diseases, but commonly<unk>  refers to an operation for an anal fistula (fistula-in-ano).<unk>  removes secondary fistulous tracts compared to fistulotomy, but fistulotomy has shorter healing times and less chance of damage to the sphincters.
Fistulectomy
Fistulotomy
Ureterosigmoidostomy
Cholecystenterostomy
Ileal interposition
Coloanal anastomosis
Ileostomy
Ileal conduit urinary diversion