Fistula in Ano: Types, Causes, Symptoms & Treatment Healing Hands Clinic An anal fistula is an abnormal tract that forms between the anal gland to the skin around the anus, often the result of a previous anal abscess that failed to heal properly. Figure 4 from BIO A Fistula Plug for Treatment of Anal Fistulas Semantic Scholar Anal Fistula Surgery in Singapore Colorectal Clinic Vaginal Lubrication: Vaginal Dryness, Vaginal Health, and More Fistula Plug Medical Illustration on White Background with Description Stock Illustration Illustration of hemorrhoidal, diagram: 142886012