Fistula << FIHS chu luh >> is a deep, sometimes twisting, passage that develops abnormally in the body. Fistulas may be caused by wounds or disease. A fistula may lead from the deep tissues to the outside through an opening in the skin. Or it may form an abnormal connection between two deep organs. It may connect a deep organ, such as the stomach, with the surface. Sometimes a fistula drains pus from a deep abscess. Or it may connect two hollow organs such as the bladder and rectum. Fistulas can be corrected by surgery.
