gut fistulation

A gastrointestinal fistula is an abnormal connection between the gut and another epithelial / endothealial - lined surface, such as another organ system, the skin surface, or elsewhere along the gastrointestinal tract. Some authors exclude fistulas involving the large bowel and esophagus when classifying or describing gastrointestinal fistulas.

Pathology

Gastro-intestinal fistulas can be congenital or acquired in nature. They are generally named according to their participating anatomic components, and virtually every imaginable combination has been reported. Examples include

Causes

Their causes can be as diverse as their types and include