Fistula Surgeon
An anal fistula is an abnormal passageway that develops from inside your anus to the skin outside. It usually develops in the upper part of your anus (butthole), where your anal glands are. When these glands become infected, drainage from the infection can create a fistula. This infection is called a perianal abscess. (Sometimes an anal fistula is also called a perianal fistula. “Perianal” means in the region of your anus.)
Anorectal fistulas occur between the anal canal and the skin around the anal opening.
Rectovaginal or Anovaginal fistulas occur when a hole develops between the rectum or anus and the vagina.
Colovaginal fistulas occur between the colon and the vagina.
Fistula Surgeon
Fistulas can occur throughout your body, either between different organs or from an organ to an opening in your skin. They usually occur when your tissues are inflamed for a long time, due to an injury or disease. Chronic inflammation and infection can eventually erode into the nearby tissues, especially when pus needs to drain. This can create a channel between the wound and nearby tissues.
Prolapsed hemorrhoids.
Thrombosed.
Bored piles.