Collagen paste for closing an anal fistula

1.1 Current evidence on the safety and efficacy of collagen paste for closing an anal fistula is inadequate in quantity and quality. Therefore, this procedure should only be used in the context of research. Find out what only in research means on the NICE interventional procedures guidance page.

1.2 Further research should report details of patient selection, the type of fistula treated, how the internal fistula opening was closed, and long-term outcomes including recurrence and the need for reoperation.