title: Invited commentary.
authors.affiliation: Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
authors.forename: Charles P
authors.initials: CP
authors.lastname: Heise
authors.forename: Perry J
authors.initials: PJ
authors.lastname: Pickhardt
mesh_terms: D001003:Anal Canal / Q000473:pathology*; D001004:Anus Diseases / Q000473:pathology*; D006801:Humans; D007412:Intestinal Fistula / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D017773:Pelvic Floor / Q000473:pathology*