A fistula is an abnormal connection between two body parts, such as an organ or blood vessel and another structure. Fistulas are usually the result of an injury or surgery. Infection or inflammation can also cause a fistula to form.
Fissure and fistula are diseases that are often confused because their pronunciations are similar. Although these two disorders occur in the same region, they are very different diseases. Anal fissure, with its most general definition, is cracks that occur due to the strain of the anal canal. On the other hand, anal fistula occurs due to inflammation in the breech region, as we mentioned before, and the patient experiences pain as a result of an abscess in the breech region