A novel template for anorectal fistula reporting in anal endosonography and MRI - a practical concept.

Anorectal fistula surgery is associated with risks of recurrence and/or faecal incontinence due to anal sphincter injuries. In order to minimise these complications, preoperative evaluation of the anatomy of the fistula tract and morphology of the anal sphincters is mandatory. Anal endosonography (AES) and Magnetic Resonance Imaging (MRI), due to high resolution of images and ability to identify a number of fistula elements which are important for surgeons in treatment planning, are the methods of choice in the diagnosis of anorectal fistulas.In this paper, a new template for endosonographic and MRI report, systematically describing all anorectal fistula's characteristics, is presented. This template provides practical information for the surgeon, useful in preoperative assessment and postoperative follow-up.