What Are Common Causes of Bloody Mucus in the Stool?

It should be anal fistula. A small amount of purulent, bloody, and mucus discharge from the external opening of the fistula is the main symptom. The biggest negative result of anal fistula is cancerous change. Generally, the longer the course of disease, the more prone to malignant change. For this reason, patients with anal fistula should pay attention to treatment without delay. It can only play a role in controlling infection and promoting inflammation, but it can not cure the anal fistula or close the fistula. Only with instrumental surgery can the anal fistula be completely cured