Home » National Institutes Of Health » NIH » Science and Research » Anal Fistulas Anal Fistulas January 15, 2026 Medline-NIH Off National Institutes Of Health, NIH, Science and Research Source: American Academy of Family PhysiciansRelated MedlinePlus Pages: Fistulas Read Original Article: Anal Fistulas » Previous: Colonic & Anorectal Fistulas Next: Endoscopic Fistula Closure in the Gastrointestinal (GI) Tract About The Author Medline-NIH