What Is a Fistula?
Reviewed: Dr. Gromatzky
1. Types of Fistula
The types of fistula can be categorized based on the patency of the fistula. For example, in a blind fistula, only one end is open while the other end is closed. Blind fistulas can also be known as a sinus tract. In a complete fistula, there are two openings and the fistula is patent.
This means there is both an internal and external opening. In an incomplete fistula, there is one opening on the external side but it does not connect to any internal organ. Although fistulas are generally in the form of a tube, there are also some fistulas that can have multiple branches.
