Anal Abscess and Fistula in Ano are common diseases involving the rectum and anal region.
Fistula In Ano
What causes Anal Abscess and Fistula in Ano
They are the result of an acute infection in the internal anal glands. Bacteria, fecal material or foreign matter clogs an anal gland, which becomes infected and the pus collects in a cavity called an Anal Abscess.
Fistula in Ano
Fistula in ano occurs in up to 50% of patients with anal abscesses. It is a tunnel which forms under the skin and connects to the anal canal. It is formed as the clogged infected glands burst into the anal canal. A Fistula in Ano can be present in certain other diseases like Crohn’s Disease.