What is the Main Reason Behind Anal Fistula? 
What is an anal fistula? Best Fistula Surgeon in Kolkata Dr. Prosenjit Coudhury says that the anal canal is the end part of the intestinal tract. It includes the rectum and anus. Sometimes an abnormal passage forms from the anal canal to the skin near the anus. This is called an anal fistula. Anal fistulas …